Mainframes vs. Personal Computers
...Main Frames vs. Personal Computers Joe Livingston POS/355 April 16 2010 Adam Manfred The essay will cover two main topics of main frames are. The second topic is personal computers or PC. The essay will define what a mainframe computer is and what the computers primary functions are. The paper will cover what a personal computer is and what PC are used for. Once both the mainframe computer and personal computer are defined, the paper will discuss the advantages and disadvantages of both systems. According to techtarget.com a mainframe is a computer that can process thousands of lines of code for a large scale environment like a bank. Mainframes were typically very large machines could span entire rooms. Mainframes can be accessed also through local area networks (LAN) or wide area networks (WAN) and have multiple users. According to bookrags.com mainframe uses a central processing unit that performs calculates and issues instructions to other components. Personal computers or PC also do most of the tasks mainframe computers do in different and smaller scales. The personal computer or PC has many uses for individual users. According to britannica.com a personal computer or digital computer is designed for the use of one person at a time. Personal computers use most of the same comp nets as a mainframe computer like a central processing unit CPU, random access memory RAM, Hard drive. The personal computer has input and output devices like keyboard,......
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Merging Personal Computers
...Merging personal computers with consumer electronics Edmund Wilson III Colorado Technical University Online ENG202 12/10/2010 Merging Consumer Electronics with Personal Computers The invention of the computer had two primary goals: convenience and flexibility. Its convenience provides ways for people to effectively complete a task. The flexibility further allows the user to perform a multiplicity of functions simultaneously. For example, an English inventor and Mathematician named Charles Babbage built an adding machine that would mechanically perform computations of arithmetic. (Berkshire 2004) Conveniently, this early computerized device removed the potential for human error and made it possible to compute information in a smaller amount of time and with less mental effort or energy. Today, the flexibility of computers has grown from simple Mathematical computations to multi-faceted functions and applications. Advancements in technology have opened personal computers to new supportive uses. Their functions have shifted from storing data and word processing to creating, playing, and sharing multimedia files and networks. The personal computer can be networked (connected) with home electronics to create the ultimate technological experience. These mergers can include gaming systems, DVD players, cameras, home theater or sound systems, high-end televisions, home security systems, and more. Converging most or all of these devices with your personal computer can expand......
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...reserved; no part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of the Publishers. Published by Pearson Education Limited in association with Penguin Books Ltd, both companies being subsidiaries of Pearson Plc For a complete list of titles available in the Penguin Readers series please write to your local Pearson Education office or contact: Penguin Readers Marketing Department, Pearson Education, Edinburgh Gate, Harlow, Essex, CM20 2JE. Contents page iv Wedding on Long Island The Greatest Racehorse in the World Virgil Sollozzo Sicilian Message Seeds of Revenge Nothing Personal Apollonia A Bridge Too Far A Good American Wife 1 6 9 15 20 25 31 34 36 37 39 40 43 44 48 55 Introduction Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6 Chapter 7 Chapter 8 Chapter 9 Chapter 10 No Revenge Chapter 11 Ghost from the Past Chapter 12 Many Changes Chapter 13 Traitor Chapter 14 Michael Rizzi, Go in Peace Chapter 15 Family Business Activities Introduction 'My father made him an offer he couldn't refuse. Luca held a gun to his head and my father told him that if he didn't agree to let Johnny go, Luca would blow his brains out.' So Michael, youngest son of Don Vito Corleone, introduces his girlfriend Kay to his father's business practice. His father is a gangster, a very important gangster. He is......
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... Personal computer Name Institution's name Introduction A computer can be defined as an electronic device with the capability of accepting raw data, process it and give out feedback, that is, it gives out information which is more useful. In the 19th century, Charles Babbage invented the first computers. They were very big and they occupied a big space. The computers were not that efficient but technological advancement led to more and more researches be conducted in order to increase the efficiency and reliability of these computers. The evolution of the personal computers took place in three major stages where each stage is said to have had a positive improvement in terms of the performance and physical size of the computers. The stages were; First stage (1937-1946) - Clifford berry and John Atanasoff were the pioneers of first electronic digital computers. The computers had no any operating system and they used vacuum tubes for processing. They were so heavy and are believed to have produced a lot of heat. They almost weighed 30 tons and consumed a lot of power. Second stage (1947-1962) – at this stage, everything was perfectly improved. Vacuum tubes were replaced with transistors and this made the computers more reliable. Programming languages were also invented in this stage as well as memory storage media. The computers were used commercially. Third stage (1963- present) – it’s at this stage that the integrated circuits were invented which brought much impact on......
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Impact of Personal Computer
...The impact of the Personal Computer A computer is a device that receives processes and presents information. A personal computer is a computer that is created for private use by an individual. “Computers small and inexpensive enough to be purchased by individuals first became feasible in the 1970’s when large scale integration made it possible to construct a processor on a single semiconductor”. Since then the PC industry has exploded and truly revolutionized how we live, work and communicate in almost every single way. The PC industry has had a number of big impacts in society and we will discuss some of them below. The PC industry has truly revolutionized how people communicate as the development of email and social networking has transformed the mass communications industry. Services like the post office have seen a significant decline in the demand for their services and now people can reach each other instantly, through email and social webpages. I think in the next 20 years, except for the occasional parcel or package that cannot be sent electronically, the post office and other similar service will continue to be sidelined in favor of electronic means. The old fashioned industry will be decimated but not entirely. The PC industry has also dramatically changed the entertainment industry. In years past, people had to go to theatres, and cinemas and video library stores to get VHS and watch movies. They even had to make a trip to the music store to buy a record. The PC...
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Best Personal Computer
...Best Personal Computer Compare and Contrast Patience D. Roberson American Intercontinental University Abstract A summation of this essay is to distinguish the differences and compare similarities between three distinct computer models; Apple iMac, Dell Vostro 230 Mini Tower, and Lenovo Think Centre A58. Consumers can use the information from these three products to decide which one is best for their business. This essay will focus on each models processor, storage memory, video/audio, along with other features they have. Best Personal Computer Compare and Contrast A company’s computer is its most valuable entity. Employees must be able to proficiently use email, access associates and activities, develop papers, improve databases, access the internet and more. When running a business, it is essential that the best computers are being utilized. Companies have increasingly come to be dependent upon a computers innovative skill to keep track of information. Choosing the best personal computer for a business is not an easy decision. Apple iMac, Dell Vostro 230 Mini Tower, and Lenovo Think Centre A58 have received top ratings for personal computers. Their processors, storage memory, video/audio, warranty, and other features have placed them as the top three choices. The processors, usually called CPU, play a significant role to a computer. Any work done on a company’s computer is performed directly or indirectly by the processor. The processor determines the......
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...Personal computers are now a very common item in many houses yet in 1955, there were only 250 computers in use throughout the world. In 1980, more than one million personal computers had been sold and by the mid-1980’s, this figure had risen to 30 million. How did this come about? A computer in 1955 was very large and could not have fitted into a normal room in a normal sized house. They frequently burned out and had a tendency to attract moths into the system which short-circuited them. (Getting a computer ‘bug’ now refers back to the time when moths were a problem to the early computers). In the late 1950’s, computers got smaller because one of its main components - the valve - was replaced by the much smaller transistor. These made computers far more reliable and therefore businesses took a much greater interest in them. Firms such as IBM could sell a mainframe computer for just under £½ million pounds in today’s money. By the mid-1960’s, the microchip was replacing the transistor. A microchip could have several transistors on it. But being smaller, it lead again to a decrease in the size of computers. By 1965, there were 20,000 computers in the world. The most famous was the IBM System/360. The microchip also leads to computers being made that were small enough to get into the average sized room in a house. By 1970, one microchip could contain 1000 transistors on it. In 1970, a home personal computer would have cost nearly £70,000 in today’s money. In 1971, the......
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Five-Force Analysis Personal Computer
...competition in an industry depends on five basic forces: new entrants, suppliers, buyers, substitutes, and industry competitors. In this paper, I analyzed the competition in the personal computer (PC) industry using Porter's Five-Force Analysis. 1. Buyers (strong) Buyers of personal computers are businesses, governments, educational institutions, and individuals. Large businesses, governments, and schools, which buy computers in large volumes, have the power to bargain on price, quality and service. Personal computer buyers are price-sensitive. However, buyers have less power when the switching costs and brand-loyalties are high. Thus, PC manufacturers can reduce a threat of buyer power by differentiating their products. An example is Apple Computer. Apple's unique operation system and its computers specifically targeted to publishing and designing industry prevent their buyers from switching to competitors' products. Its sleek product design represented by iMac and iBook also acquired many fans and increased brand-loyalty. But, despite several ways in which manufacturers have differentiated their products and found ways to increase switching costs, customers still see units as very similar and thus choose primarily on price. 2. Suppliers (Moderate) Components for manufacturing personal computers are the microprocessor, motherboard, memory storage, and peripherals such as monitor, keyboard, or mouse, along with bundled software. Most of the components are......
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...Name: Oscar Ramnarine Professor: Wong 12/3/2014 1. What are the six steps that you can use to solve any computer problem? * 1. Interview the user and back up data * 2. Examine the system and make your best guess * 3.Test your theory * 4. Plan your solution and then fix the problem * 5. Verify the fix and take preventive action * 6. Document what happened 2. Blue screen errors happen when which type of processes encounter an error? * when processes running in kernel mode encounter a problem and Windows must stop the system. 3. In what folder are driver files stored? * C:/Windows/system32 4. What is the command to use the Memory Diagnostics tool? * mdsched.exe 5. What method can you use to test memory on a Windows XP system by using the Memory Diagnostics tool without having to install Windows 7 or Vista on the system? * You can use the DVD booting, select Repair your computer, and select Windows Memory Diagnostic Tool. 6. What is the command to use the System File Checker to immediately verify system files? To verify system files on the next restart? * sfc /scannow. To verify system files on the next restart check the box dialog "on the next restart" 7. How many bits does an x86-based operating system process at one time? * 32 bits 8. What GUI tool can you use to stop a program that is hung? * Task Manager 9. What command-line tool can you use to stop a program that...
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Benefits of a Personal Computer
...The benefits of a PC The benefits of having a personal computer at home is huge. Owning a PC at home can provide me with the following tangible benefits: 1. PC can be used for multiple recreational activities. It can be used for playing games, watching movies, listening to songs, recording voice, drawing via online tools and much more. It can be used as an all-in-one machine and reduce the cost of buying specific electronic devices like DVD player, music system, etc. I use the PC for doing all the things mentioned above. 2. My PC can drastically increase the speed of my work for any projects, assignments and homework. I can use the PC for calculations using excel, for creating charts using Visio, preparing presentations using PowerPoint, etc. I also use the PC for preparing a list of household tasks to be completed. Within few minutes, I can make a list of daily chores at a much faster speed. I use Microsoft word, Microsoft excel to make a number of documents required for daily activities. There is lot of information available on the internet and a wide range of formats, guides and software in the PC to help individuals like me to work faster. As lot of my time is saved by using a PC, I can focus on making pocket money in this time. 3. My PC can help me stay connected with my dear ones. A PC can reduce the cost for communication considerably. I stay connected to my friends, family and classmates through e-mails, phone calls via PC, Facebook...
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Personal Computers and the Internet
...Personal Computers on the Internet The differences between Internet and Network Connections A PC makes a direct connection to a network by way of a network adapter, which might be a network port embedded on the motherboard or a network interface card (NIC). The adapter might also be an external device connecting to the PC using a USB port, SCSI external port, or a serial port. The adapter might provide a port for a network cable or an antenna for a wireless connection. (Andrews, Ph.D, n.d.). Local Area Network (LAN) is an example of a network connection. This covers a local area such as a home, office, or other building or a small group of buildings. The Ethenet is the most popular network architecture used today. The three variations of Ethernet are primarily distinquished from one another by speed. A single computer or local network connects to the Internet by way of an Internet service provider (ISP) using one of the following bandwidth technologies: • Regular telephone lines. The most common and least expensive way to connect to an ISP, requires an internal or external modem. • Cable modem. Just as with cable TV, cable modems are always connected. Cable modem is an example of broadband media. Broadband refers to any type of networking medium that carries more than one type of transmission. With a cable modem, the TV signal to your television and the data signals to your PC share the same cable. • DSL (Digital Subscriber Line) is a group of broadband......
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Mainframe vs Personal Computer
...Mainframe VS Personal Computer Mainframe VS Personal Computer What is the difference between a mainframe and a personal computer? What are the advantages and disadvantages of each? The difference between a mainframe computer and a personal computer is, a personal computer is designed for one user to be logged in at any given time, while a mainframe computer can have several users simultaneously. Also you can go out to your local electronic store and purchase a powerful PC at a reasonable price. As for mainframe computers you cannot just run out and buy one unless you are very wealthy. The main difference the two, that everyone notices is the size. Mainframe computers only come in one size, extra-large. Personal computers come in a variety of shapes and sizes. Mainframe computers and personal computers both have their advantages and disadvantages. The mainframe computers advantages are, a “mainframe computer can communicate with several users simultaneously through a technique called timesharing”(Beekman & Quinn, 2008, p. 11). Another disadvantage of a mainframe computer is they are, “room-sized machines with price tags to match” (Beekman & Quinn, 2008, p. 11). Maintenance and support is another disadvantage. When a mainframe computer needs an up-grade or repairs done, an outside party under strict contract is needed to be contacted. The advantages of a personal computer are they come in a variety of sizes, a “desktop computer is a PC......
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Perkembangan Personal Computer
...PERKEMBANGAN PERSONAL COMPUTER DARI MASA KE MASA Perkembangan komputer dari masa ke masa salalu mengalami peningkatan. Pada awalnya komputer bukanlah alat yang diciptakan untuk berbagai kegunaan seperti yang kita amati pada zaman sekarang. Dulu komputer diciptakan hanya sebagai alat untuk mempermudah dalam penghitungan atau lebih mudahnya sebagai mesin hitung matematika. Tetapi seiring dengan perkembangan zaman komputer ini terus berevolusi menjadi mesin serba guna khususnya pada bidang industri dan penelitian. Oleh karena itu, kata dasar komputer berasal dari kata “compute” yang berarti menghitung dengan kata lain komputer berati alat penghitung. Komputer pertama kali ditemukan oleh Charles Babbage, kecerdasannya logika matematikanya yang sangat sepesial membuatnya mampu menciptakan sebuah mesin yang dia sebut dengan nama Analytical Engine pada tahun 1882, sebuah mesin yang berfungsi sebagai alat perhitungan-perhitungan umum. Beberapa tahun kemudian munculah John V. Atanasoff dengan komputer rancangannya Atanasoff-Berry Computer (ABC) pada tahun 1937 yang kemudian dianggap resmi menjadi komputer elektronik pertama. selang beberapa tahun kemudian munculah ENIAC ( Electronic Numerical Integrator and Computer) yang di perkenalkan oleh John Mauchly dan J. Presper Eckert. Sebuah mesin yang dibuat oleh kerjasama antara pemerintah Amerika Serikat dan University of Pennsylvania. Terdiri dari 18.000 tabung vakum(vacum tube), 70.000 resistor, dan 5 juta......
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...every American family owns at least one personal computer. The personal computer technology has grown greatly improving the personal computer industry. Each year more and more improvements are made. Personal computers today are by far superior to personal computers of 40 years ago. Dimension One The operation of personal computers made today has grown tremendously from personal computers of 40 years ago. In the late 1970s into the 1980s, computers were developed for household use, offering personal productivity, programming and games. Personal computers were made much larger and more expensive systems were aimed for office and small business use. They were difficult to set-up, difficult to operate, and only had 4k bytes of memory. You would need to run several cords, and wires to set-up all the components, it would only operate in basic formats and was costly to upgrade to an expansion memory adapter. It was less expensive to just by the newest model. Dimension Two Nowadays, personal computers are in the workplace, schools, shopping facilities, and almost every household has at least one personal computer in the home. They are a lot more affordable which allows it to be a lot easier to own one. Today’s personal computers are more advanced then they were years ago. They can operate with multiple media for entering programs, for example compact disks, zip disks, and/or a floppy disk. On the other hand, personal computers years ago used cassettes for entering......
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Hewlett-Packard and the Personal Computer Industry
...HP: Stay or Leave the PC Industry The computer industry is a tough and competitive business. Companies are constantly competing to have the newest and greatest advancements in technology that will make their product the most appealing to consumers. It is a multi billion-dollar industry, but in mid August Hewlett Packard, the worlds largest PC distributor made the announcement that it planned to exit the Personal computer industry to focus on other aspects of their company. This shocked not only consumers, but also other competitors in the industry. Just a few months after Leo Apotheker, the CEO who made this decision, was fired from his position and replaced by Meg Whitman. When Whitman was hired she made it clear that “Apotheker's plan to exit PCs would still be considered.” For about three months this left Investors unsure about the HP stock and in just three days the stock dropped about $10 per share. It wasn’t until late October that Whitman officially announced the HP would stay in the PC business. Was this the right thing to do for the company or should they have exited the business to focus on other facets of the company? “Hewlett Packard’s revenue from last year was 92,755 million. The Personal Computer Group (PCG) brought in more that 30% of that revenue pulling in 30,458 million. Looking at this data it seems that getting rid of this line would be foolish and risky for the company. Apotheker though was focused more on the operating margin the PC industry was......
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A desktop computer is a personal computer designed for regular use at a single location on or near a desk or table due to its size and power requirements. The most common configuration has a case that houses the power supply, motherboard (a printed circuit board with a microprocessor as the central processing unit (CPU), memory, bus, and other electronic components), disk storage (usually one or more hard disk drives, optical disc drives, and in early models a floppy disk drive); a keyboard and mouse for input; and a computer monitor, speakers, and, often, a printer for output. The case may be oriented horizontally or vertically and placed either underneath, beside, or on top of a desk.
Prior to the widespread use of microprocessors, a computer that could fit on a desk was considered remarkably small; the type of computers most commonly used were minicomputers, which were themselves desk-sized. Early computers took up the space of a whole room. Minicomputers generally fit into one or a few refrigerator-sized racks.
The very first "programmable calculator/computer" was marketed in the second half of the 1960s, starting with the Italian machinery OlivettiProgramma 101 (1965) computer at typewriter size. More desktop models were introduced in 1971, leading to a model programmable in BASIC in 1972, from Olivetti itself, followed by Hewlett-Packard. This kind of computers used a smaller version of a minicomputer design based on read-only memory (ROM) and had small one-line LED alphanumeric displays. They could draw computer graphics with a plotter.
Growth and development
Apple II, TRS-80 and Commodore PET were first generation personal home computers launched in 1977, which were aimed at a consumer market – rather than businessmen or computer hobbyists. Byte magazine referred to these three as the "1977 Trinity" of personal computing. Throughout the 1980s and 1990s, desktop computers became the predominant type, the most popular being the IBM PC and its clones, followed by the Apple Macintosh, with the third-placed CommodoreAmiga having some success in the mid-1980s but declining by the early 1990s.
Early personal computers, like the original IBM Personal Computer, were enclosed in a "desktop case", horizontally oriented to have the display screen placed on top, thus saving space on the user's actual desk, although these cases had to be sturdy enough to support the weight of CRT displays that were widespread at the time. Over the course of the 1990s, desktop cases gradually became less common than the more-accessible tower cases (Tower was a trademark of NCR created by ad agency Reiser Williams deYong) that may be located on the floor under or beside a desk rather than on a desk. Not only do these tower cases have more room for expansion, they have also freed up desk space for monitors which were becoming larger every year. Desktop cases, particularly the compact form factors, remain popular for corporate computing environments and kiosks. Some computer cases can be interchangeably positioned either horizontally (desktop) or upright (mini-tower).
Influential games such as Doom and Quake during the 1990s had pushed gamers and enthusiasts to frequently upgrade to the latest CPUs and graphics cards (3dfx, ATI, and Nvidia) for their desktops (usually a tower case) in order to run these applications, though this has slowed since the late 2000s as the growing popularity of Intel integrated graphics forced game developers to scale back. Creative Technology's Sound Blaster series were a de facto standard for sound cards in desktop PCs during the 1990s until the early 2000s, when they were reduced to a niche product, as OEM desktop PCs came with sound boards integrated directly onto the motherboard.
While desktops have long been the most common configuration for PCs, by the mid-2000s the growth shifted from desktops to laptops. Notably, while desktops were mainly produced in the United States, laptops had long been produced by contract manufacturers based in Asia, such as Foxconn. This shift led to the closure of the many desktop assembly plants in the United States by 2010. Another trend around this time was the increasing proportion of inexpensive base-configuration desktops being sold, hurting PC manufacturers such as Dell whose build-to-order customization of desktops relied on upselling added features to buyers.
Battery-powered portable computers had just 2% worldwide market share in 1986. However, laptops have become increasingly popular, both for business and personal use. Around 109 million notebook PCs shipped worldwide in 2007, a growth of 33% compared to 2006. In 2008, it was estimated that 145.9 million notebooks were sold, and that the number would grow in 2009 to 177.7 million. The third quarter of 2008 was the first time when worldwide notebook PC shipments exceeded desktops, with 38.6 million units versus 38.5 million units.
The sales breakdown of the Apple Macintosh have seen sales of desktop Macs staying mostly constant while being surpassed by that of Mac notebooks whose sales rate has grown considerably; seven out of ten Macs sold were laptops in 2009, a ratio projected to rise to three out of four by 2010. The change in sales of form factors is due to the desktop iMac moving from affordable (iMac G3) to upscale (iMac G4) and subsequent releases are considered premium all-in-ones. By contrast, the MSRP of the MacBook laptop lines have dropped through successive generations such that the MacBook Air and MacBook Pro constitute the lowest price of entry to a Mac, with the exception of the even more inexpensive Mac Mini (albeit without a monitor and keyboard), not surprisingly the MacBooks are the top-selling form factors of the Macintosh platform today.
The decades of development means that most people already own desktop computers that meet their needs and have no need of buying a new one merely to keep pace with advancing technology. Notably the successive release of new versions of Windows (Windows 95, 98, XP, Vista, 7, 8, 10 and so on) had been drivers for the replacement of PCs in the 1990s, but this slowed down in the 2000s due to the poor reception of Windows Vista over Windows XP. Recently, some analysts have suggested that Windows 8 has actually hurt sales of PCs in 2012, as businesses have decided to stick with Windows 7 rather than upgrade. Some suggested that Microsoft has acknowledged "implicitly ringing the desktop PC death knell" as Windows 8 offers little upgrade in desktop PC functionality over Windows 7; instead, Windows 8's innovations are mostly on the mobile side.
The post-PC trend has seen a decline in the sales of desktop and laptop PCs. The decline has been attributed to increased power and applications of alternative computing devices, namely smartphones and tablet computers. Although most people exclusively use their smartphones and tablets for more basic tasks such as social media and casual gaming, these devices have in many instances replaced a second or third PC in the household that would have performed these tasks, though most families still retain a powerful PC for serious work.
Among PC form factors, desktops remain a staple in the enterprise market but have lost popularity among home buyers. PC makers and electronics retailers have responded by investing their engineering and marketing resources towards laptops (initially netbooks in the late 2000s, and then the higher-performance Ultrabooks from 2011 onwards), which manufacturers believe have more potential to revive the PC market than desktops.
In April 2017, StatCounter declared a "Milestone in technology history and end of an era" with Android operating system more popular than Windows (the operating system that made desktops dominant over mainframe computers). Windows is still most popular on desktops (and laptops), while smartphones (and tablets) use Android, iOS (Apple products) or Windows 10 Mobile.
An all-in-one desktop computer integrates the system's internal components into the same case as the display, thus occupying a smaller footprint (with fewer cables) than desktops that incorporate a tower.
The all-in-one form factor was popular during the early 1980s for personal computers intended for professional use such as the Kaypro II, Osborne 1, TRS-80 Model II and Compaq Portable. Many manufacturers of home computers like Commodore and Atari included the computer's motherboard into the same enclosure as the keyboard; these systems were most often connected to a television set for display. Apple has manufactured several popular examples of all-in-one computers, such as the original Macintosh of the mid-1980s and the iMac of the late 1990s and 2000s. Some all-in-one desktops, such as the iMac G4, have used laptop components in order to reduce the size of the system case. By the mid 2000s, many all-in-one designs have used flat panel displays, and later models have incorporated touchscreen displays, allowing them to be used similarly to a mobile tablet.
Like most laptops, some all-in-one desktop computers are characterized by an inability to customize or upgrade internal components, as the systems' cases do not provide convenient access to upgradable components, and faults in certain aspects of the hardware may require the entire computer to be replaced, regardless of the health of its remaining components. There have been exceptions to this; the monitor portion of HP's Z1 workstation can be angled flat, and opened like a vehicle hood for access to internal hardware.
These desktops are used as home PCs but have a heavy price tag. They are equipped with powerful processors, graphic cards and huge RAM capacity over and above having many complex factors. It is very common for them to have multiple hard drives as they are mostly used for gaming.
These desktops are very common and quite budget friendly compared to others in the market. It comes with separate display component and processing component. The components are connected by cables or wireless connection to execute command from each other. These computers are easy to customize and upgrade as per our requirement. 
These desktops are connected to home entertainment systems and typically used for amusement purpose. They come with high definition display, video graphics, surround sound and TV tuner systems to compliment typical PC features. 
These desktops are same as Full-Sized desktops but the only different is its size. These are almost half of them and cost, performance same as Full-Sized desktops. Compact desktops are very difficult to customize and upgrade. 
Comparison with laptops
Main article: Laptop § Disadvantages
Desktops have an advantage over laptops in that the spare parts and extensions tend to be standardized, resulting in lower prices and greater availability. For example, the size and mounting of the motherboard is standardized into ATX, microATX, BTX or other form factors. Desktops have several standardized expansion slots, like conventional PCI or PCI express, while laptops only tend to have one mini-PCI slot and one PC Card slot (or ExpressCard slot). Procedures for assembly and disassembly of desktops tend to be simple and standardized as well. This tends not to be the case for laptops, though adding or replacing some parts, like the optical drive, hard disk, or adding an extra memory module is often quite simple. This means that a desktop computer configuration, usually a tower case, can be customized and upgraded to a greater extent than laptops. This customization has kept tower cases popular among gamers and enthusiasts.
Another advantage of the desktop is that (apart from environmental concerns) power consumption is not as critical as in laptop computers because the desktop is exclusively powered from the wall socket. Desktop computers also provide more space for cooling fans and vents to dissipate heat, allowing enthusiasts to overclock with less risk. The two large microprocessor manufacturers, Intel and AMD, have developed special CPUs for mobile computers (i.e. laptops) that consume less power and lower heat, but with lower performance levels.
Laptop computers, conversely, offer portability that desktop systems (including small form factor and all-in-one desktops) can not due to their compact size and clamshell design. The laptop's all-in-one design provides a built-in keyboard and a pointing device (such as a trackpad) for its user, and can draw on power supplied by a rechargeable battery. Laptops also commonly integrate wireless technologies like WiFi, Bluetooth and 3G, giving them a broader range of options for connecting to the internet, though this trend is changing as newer desktop computers come integrated with one or more of these technologies.
A desktop computer needs a UPS to handle electrical disturbances like short interruptions, blackouts and spikes; achieving an on-battery time of more than 20–30 minutes for a desktop PC requires a large and expensive UPS. A laptop with sufficiently charged battery can continue to be used for hours in case of a power outage and is not affected by short power interruptions and blackouts.
A desktop computer has an advantage over a laptop when you need to minimize power consumption and heat output. This means that you will never be able to overclock it to the sort of performance levels achieved by Cyberpower's Gamer Infinity PC, nor will you be able to fit a laptop with the kind of graphic cards found in most of these desktop systems. You may find a laptop with high-definition Blu-ray drives, but you may not get much benefit if you're watching a Blu-ray film on a screen that's 17in or smaller. In contrast, the smallest monitor supplied with these £1,299 PCs was 19in, with more than one 24in monitor included as well. These monitors are great for watching films, as well as for performing tasks such as video editing or multi-track music recording.If you are looking for a really powerful PC, then these desktop computer still hold an edge over the modern laptops.
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A stylized illustration of a desktop personal computer, consisting of a case (containing the motherboard and processor), a monitor, a keyboard and a mouse