Desktop computer

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A desktop computer system. It has a monitor, keyboard, mouse, speakers, and a computer tower. The computer tower contains the motherboard and processor. The typical desktop computer system.png
A desktop computer system. It has a monitor, keyboard, mouse, speakers, and a computer tower. The computer tower contains the motherboard and processor.
A computer lab with desktop PCs with flat-panel monitors Computer lab showing desktop PCs warwick.jpg
A computer lab with desktop PCs with flat-panel monitors

A desktop computer (often abbreviated desktop [1] ) is a personal computer designed for regular use at a stationary location on or near a desk (as opposed to a portable computer) 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, memory, bus, certain peripherals and other electronic components), disk storage (usually one or more hard disk drives, solid state drives, optical disc drives, and in early models a floppy disk drive); a keyboard and mouse for input; and a 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.

Contents

Desktop computers with their cases oriented vertically are referred to as towers. As the majority of cases offered since the mid-1990s are in this form factor, the term desktop has been retronymically used to refer to modern cases offered in the traditional horizontal orientation. [2] [3]

History

Origins

Apple II computer Apple II IMG 4212.jpg
Apple II computer

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, despite the name, were rather large and were "mini" only compared to the so-called "big iron". Early computers, and later the general purpose high throughput "mainframes", took up the space of a whole room. Minicomputers, on the contrary, generally fit into one or a few refrigerator-sized racks, or, for the few smaller ones, built into a fairly large desk, not put on top of it.

It was not until the 1970s when fully programmable computers appeared that could fit entirely on top of a desk. 1970 saw the introduction of the Datapoint 2200, a "smart" computer terminal complete with keyboard and monitor, was designed to connect with a mainframe computer but that did not stop owners from using its built-in computational abilities as a stand-alone desktop computer. [4] The HP 9800 series, which started out as programmable calculators in 1971 but was programmable in BASIC by 1972, used a smaller version of a minicomputer design based on ROM memory and had small one-line LED alphanumeric displays and displayed graphics with a plotter. [5] The Wang 2200 of 1973 had a full-size cathode-ray tube (CRT) and cassette tape storage. The IBM 5100 in 1975 had a small CRT display and could be programmed in BASIC and APL. These were generally expensive specialized computers sold for business or scientific uses. [6]

Growth and development

Apple II, TRS-80 and Commodore PET were first generation personal home computers launched in 1977, which were aimed at the consumer market – rather than businessmen or computer hobbyists. Byte magazine referred to these three as the "1977 Trinity" of personal computing. [7] 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, [8] with the third-placed Commodore Amiga having some success in the mid-1980s but declining by the early 1990s.

IBM 5150 Personal Computer Ibm pc 5150.jpg
IBM 5150 Personal Computer
A person working on a 2004 tower PC computer with a Dell monitor Man with computer, controlling a hydroelectric power plant.JPG
A person working on a 2004 tower PC computer with a Dell monitor

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 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.

Decline

Laptops in store Laptops in store 20170514.jpg
Laptops in store

While desktops have long been the most common configuration for PCs, [9] by the mid-2000s the growth shifted from desktops to laptops. [10] 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. [11]

Battery-powered portable computers had just a 2% worldwide market share in 1986. [12] However, laptops have become increasingly popular, both for business and personal use. [13] Around 109 million notebook PCs shipped worldwide in 2007, a growth of 33% compared to 2006. [14] In 2008, it was estimated that 145.9 million notebooks were sold and that the number would grow in 2009 to 177.7 million. [15] 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. [13] [16] [17] [18]

The sales breakdown of the Apple Macintosh has 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 G3 to upscale G4 model 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), and the MacBooks are the top-selling form factors of the Macintosh platform today. [19]

The decades of development mean 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 in the 2000s due to the poor reception of Windows Vista over Windows XP. IDC analyst Jay Chou suggested that Windows 8 actually hurt sales of PCs in 2012, as businesses decided to stick with Windows 7 rather than upgrade. [20] Some suggested that Microsoft had acknowledged "implicitly ringing the desktop PC death knell" as Windows 8 offered little upgrade in desktop PC functionality over Windows 7; instead, Windows 8's innovations were mostly on the mobile side. [21]

The post-PC trend saw a decline in the sales of desktop and laptop PCs. [20] [22] The decline was attributed to increased power and applications of alternative computing devices, namely smartphones and tablet computers. [23] 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. [24]

Among PC form factors, desktops remain a staple in the enterprise market but lost popularity among home buyers. PC makers and electronics retailers 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 believed had more potential to revive the PC market [9] than desktops.

In April 2017, StatCounter declared a "Milestone in technology history and end of an era" with the mobile Android operating system becoming more popular than Windows (the operating system that made desktops dominant over mainframe computers). [25] Windows is still most popular on desktops (and laptops), while smartphones (and tablets) use Android or iOS.

Resurgence

A gaming desktop setup. Gaming PC-Setup - Astaroth- The Completed System.jpg
A gaming desktop setup.

Towards the middle of the 2010s, media sources began to question the existence of the post-PC trend, at least as conventionally defined, stating that the so-called post-PC devices are just other portable forms of PCs joining traditional desktop PCs which still have their own operation areas and evolve. [26] [27] [28] [29]

Although for casual use traditional desktops and laptops have seen a decline in sales, in 2018, global PC sales experienced a resurgence, driven by the business market. [30] [31] Desktops remain a solid fixture in the commercial and educational sectors. [32] According to the International Data Corporation (IDC), PC sales shot up 14.8% between 2020 and 2021 and desktop market grew faster than the laptop market in the second quarter of 2021. [33] [34] [35] Total PC shipments during 2021 reached 348.8 million units, up 14.8% from 2020. This represents the highest level of shipments the PC market has seen since 2012. [36] In addition, gaming desktops have seen a global revenue increase of 54% annually. [37] For gaming the global market of gaming desktops, laptops, and monitors is expected to grow to 61.1 million shipments by the end of 2023, up from 42.1 million, with desktops growing from 15.1 million shipments to 19 million. [38] PC gaming as a whole now accounts for 28% of the total gaming market as of 2017. [39] This is partially due to the increasing affordability of desktop PCs. [40]

Types

By size

HP-HP9000-C110-Workstation 10.jpg
HP-HP9000-C110-Workstation 21.jpg
An HP 9000 workstation oriented as both a desktop (left) and as a tower (both). Optional plastic feet (pictured bottom right) allow the workstation to be held sturdily upright in the tower configuration.

Full-size

Full-sized desktops are characterized by separate display and processing components. These components are connected to each other by cables or wireless connections. They often come in a tower form factor. These computers are easy to customize and upgrade per user requirements, e.g. by expansion card.

Early extended-size (significantly larger than mainstream ATX case) tower computers sometimes were labeled as "deskside computers", [41] [42] but currently this naming being quite rare. [43]

Compact

Compact desktop can be used similar to all-in-one computer. Dell OptiPlex behind TFT screen.jpg
Compact desktop can be used similar to all-in-one computer.

Compact desktops are reduced in physical proportions compared to full-sized desktops. They are typically small-sized, inexpensive, low-power computers designed for basic tasks such as web browsing, accessing web-based applications, document processing, and audio/video playback. [44] Hardware specifications and processing power are usually reduced [45] and hence make them less appropriate for running complex or resource-intensive applications. A nettop is a notable example of a compact desktop. A laptop without a screen can functionally be used as a compact desktop, sometimes called a "slabtop". [46]

All-in-one

Dell Inspiron One 23 Touch as an example of an AIO desktop PC Dell Inspiron One 23 Touch AIO Desktop PC.png
Dell Inspiron One 23 Touch as an example of an AIO desktop PC

An all-in-one (AIO) 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. [47] The All-in-one systems are rarely labeled as desktop computers.

By usage

Gaming computer

Gaming computers are desktop computers with high performance CPU, GPU, and RAM optimized for playing video games at high resolution and frame rates. Gaming computer peripheries usually include mechanical keyboards for faster response time, [48] and a gaming computer mouse which can track higher dots per inch movement. [49]

Home theater

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 complement typical PC features.

Thin client / Internet appliance

Over time some traditional desktop computers have been replaced with thin clients utilizing off-site computing solutions like the cloud. [50] As more services and applications are served over the internet from off-site servers, local computing needs decrease, this drives desktop computers to be smaller, cheaper, and need less powerful hardware. More applications and in some cases entire virtual desktops are moved off-site and the desktop computer runs only an operating system or a shell application while the actual content is served from a server. Thin client computers may do almost all of their computing on a virtual machine in another site. Internal, hosted virtual desktops can offer users a completely consistent experience from anywhere. [51]

Workstation

HP-Integrity-RX2600 09.jpg
HP Integrity server with rack-mountable and desktop variants
HP-HP9000-ZX6000-Itanium2-Workstation 11.jpg
HP9000 workstation, based on an Integrity desktop server

Workstations are advanced class of personal computers designed for a user and more powerful than a regular PC but less powerful than a server in regular computing. They are capable of high-resolution and three-dimensional interfaces, and typically used to perform scientific and engineering work. [52] Like server computers, they are often connected with other workstations. [53] The main form-factor for this class is a Tower case, but most vendors produce compact or all-in-one low-end workstations. Most tower workstations can be converted to a rack-mount version.

Desktop server

Oriented for small business class of servers; typically entry-level server machines, with similar to workstation/gaming PC computing powers and with some mainstream servers features, but with only basic graphic abilities; and some desktop servers can be converted to workstations.

Non-common types

Quantum technology

On January 29, 2021 Shenzhen SpinQ Technology announced that they will release the first-ever desktop quantum computer. This will be a miniaturized version of their previous quantum computer based on the same technology (nuclear magnetic resonance) and will be 2 qubit device. Applications will mostly be educational for high school and college students. The company claims SpinQ will be released to the public by the fourth quarter of 2021. [54] [55] [56]

Comparison with laptops

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 are standardized into ATX, microATX, BTX or other form factors. Desktops have several standardized expansion slots, like conventional PCI or PCI Express, while laptops tend to have only 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) cannot 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 touchpad) for its user and can draw on power supplied by a rechargeable battery. Laptops also commonly integrate wireless technologies like Wi-Fi, 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. [57] [58] A laptop with a 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 often has the advantage over a comparable laptop in computational capacity. Overclocking is often more feasible on a desktop than on a laptop; similarly, hardware add-ons such as discrete graphics co-processors may be possible to install only in a desktop. [59]

See also

Related Research Articles

<span class="mw-page-title-main">Power Macintosh</span> Family of personal computers released by Apple Computer

The Power Macintosh, later Power Mac, is a family of personal computers designed, manufactured, and sold by Apple Computer, Inc as the core of the Macintosh brand from March 1994 until August 2006.

<span class="mw-page-title-main">Thin client</span> Non-powerful computer optimized for remote server access

In computer networking, a thin client is a simple (low-performance) computer that has been optimized for establishing a remote connection with a server-based computing environment. They are sometimes known as network computers, or in their simplest form as zero clients. The server does most of the work, which can include launching software programs, performing calculations, and storing data. This contrasts with a rich client or a conventional personal computer; the former is also intended for working in a client–server model but has significant local processing power, while the latter aims to perform its function mostly locally.

<span class="mw-page-title-main">Workstation</span> High-end single-user computer

A workstation is a special computer designed for technical or scientific applications. Intended primarily to be used by a single user, they are commonly connected to a local area network and run multi-user operating systems. The term workstation has been used loosely to refer to everything from a mainframe computer terminal to a PC connected to a network, but the most common form refers to the class of hardware offered by several current and defunct companies such as Sun Microsystems, Silicon Graphics, Apollo Computer, DEC, HP, NeXT, and IBM which powered the 3D computer graphics revolution of the late 1990s.

<span class="mw-page-title-main">Dell</span> American multinational technology company

Dell Inc. is an American technology company that develops, sells, repairs, and supports computers and related products and services. Dell is owned by its parent company, Dell Technologies.

<span class="mw-page-title-main">Mobile workstation</span> Larger, bulkier laptop designed to replace a desktop

A mobile workstation, also known as a desktop replacement computer (DTR) or workstation laptop, is a personal computer that provides the full capabilities of a workstation-class desktop computer while remaining mobile. They are often larger, bulkier laptops or in some cases 2-in-1 PCs with a tablet-like form factor and interface. Because of their increased size, this class of computer usually includes more powerful components and a larger display than generally used in smaller portable computers and can have a relatively limited battery capacity. Some use a limited range of desktop components to provide better performance at the expense of battery life. These are sometimes called desknotes, a blend of "desktop" and "notebook", though the term is also applied to desktop replacement computers in general. Other names being monster notebooks or musclebooks in reference to muscle cars.

<span class="mw-page-title-main">Laptop</span> Personal computer for mobile use

A laptop computer or notebook computer, also known as a laptop or notebook, is a small, portable personal computer (PC). Laptops typically have a clamshell form factor with a flat panel screen on the inside of the upper lid and an alphanumeric keyboard and pointing device on the inside of the lower lid, although 2-in-1 PCs with a detachable keyboard are often marketed as laptops or as having a "laptop mode". Most of the computer's internal hardware is fitted inside the lower lid enclosure under the keyboard, although many laptops have a built-in webcam at the top of the screen and some modern ones even feature a touch-screen display. In most cases, unlike tablet computers which run on mobile operating systems, laptops tend to run on desktop operating systems, which were originally developed for desktop computers.

<span class="mw-page-title-main">Pizza box form factor</span> Style of computer or other device case

In computing, a pizza box is a style of case design for desktop computers or network switches. Pizza box cases tend to be wide and flat, normally 1.5 to 4 inches or 4 to 10 centimetres in height, resembling pizza delivery boxes and thus the name. This is in contrast to a tower system, whose case height is much greater than the width and has an "upright" appearance. In modern usage, the term "pizza box" is normally reserved for very flat cases with height no more than 2 inches (51 mm), while those taller than 2 inches are referred to as desktop cases instead.

<span class="mw-page-title-main">Computer tower</span> Computer case that stands vertically upright

In personal computing, a tower is a form factor of desktop computer case whose height is much greater than its width, thus having the appearance of an upstanding tower block, as opposed to a traditional "pizza box" computer case whose width is greater than its height and appears lying flat.

<span class="mw-page-title-main">Small form factor (desktop and motherboard)</span> Form factor for desktop computers and motherboards

Small form factor is a term used for desktop computers and for some of its components, chassis and motherboard, to indicate that they are designed in accordance with one of several standardized computer form factors intended to minimize the volume and footprint of a desktop computer compared to the standard ATX form factor.

<span class="mw-page-title-main">Subnotebook</span> Obsolete term for smaller laptops

Subnotebook, also called ultraportable, superportable, or mini notebook, was a marketing term for laptop computers that are smaller and lighter than a typical notebook-sized laptop.

A gaming computer, also known as a gaming PC, is a specialized personal computer designed for playing PC games at high standards. Gaming PCs typically differ from mainstream personal computers by using high-performance graphics cards, a high core-count CPU with raw performance and higher-performance RAM. Gaming PCs are also used for other demanding tasks such as video editing. Gamers and computer enthusiasts may choose to overclock their CPUs and GPUs in order to gain extra performance. The added power draw needed to overclock either processing unit often requires additional cooling, usually by air cooling or water cooling.

<span class="mw-page-title-main">Tablet computer</span> Mobile computer with integrated display, circuitry and battery

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The usage share of operating systems is the percentage of computers that run a certain operating system (OS) at any particular time. All such figures are necessarily estimates because gathering data on OS usage is difficult on a meaningful scale. There are few reliable primary sources and no agreed methodologies for its collection.

The Climate Savers Computing Initiative was a nonprofit group of consumers, businesses and conservation organizations dedicated to promoting smart technologies that improve power efficiency and reduce energy consumption of computers. Formed in 2007, it was based in Portland, Oregon. In July 2012, Climate Savers Computing Initiative combined with The Green Grid and its programs continue within that organization.

<span class="mw-page-title-main">History of personal computers</span> History of the consumer personal computer

The history of the personal computer as a mass-market consumer electronic device began with the microcomputer revolution of the 1970s. A personal computer is one intended for interactive individual use, as opposed to a mainframe computer where the end user's requests are filtered through operating staff, or a time-sharing system in which one large processor is shared by many individuals. After the development of the microprocessor, individual personal computers were low enough in cost that they eventually became affordable consumer goods. Early personal computers – generally called microcomputers – were sold often in electronic kit form and in limited numbers, and were of interest mostly to hobbyists and technicians.

<span class="mw-page-title-main">Personal computer</span> Computer intended for use by an individual person

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<span class="mw-page-title-main">Post-PC era</span> Market trend

The post-PC era was a market trend observed during the late 2000s and early 2010s involving a decline in the sales of personal computers (PCs) in favor of post-PC devices; which include mobile devices such as smartphones and tablet computers as well as other mobile computers such as wearable and ubiquitous ones. These devices emphasize portability and connectivity, including the use of cloud-based services, more focused "apps" to perform tasks, and the ability to synchronize information between multiple devices seamlessly.

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<span class="mw-page-title-main">Canon Computer Systems</span> American subsidiary (1992–2001)

Canon Computer Systems, Inc. (CCSI), sometimes shortened to Canon Computer, was an American subsidiary of Canon Inc. formed in 1992 to develop and market the parent company's personal computers and workstations. The subsidiary also assumed the responsibility of marketing Canon's printers and photocopiers, which were formerly sold by other Canon divisions. It went defunct in January 2001.

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  50. ↑ Bleicher, Paul (June 2008). "The Evolution of the Desktop Computer". Applied Clinical Trials. Monmouth Junction. 17 (6): 44, 46, 48.
  51. ↑ Fata, Matt. "Corp to Cloud: Google's Virtual Desktops". Communications of the ACM. doi:10.1145/3233233. S2CID   53112965.{{cite journal}}: Cite journal requires |journal= (help)
  52. ↑ "Workstation Definition & Facts". Encyclopedia Britannica. Retrieved May 25, 2021.
  53. ↑ "Workstation Definition". techterms.com. Retrieved May 27, 2021.
  54. ↑ "A Desktop Quantum Computer for Just $5,000". Discover Magazine.
  55. ↑ "SpinQ 量旋科技". www.spinq.cn.
  56. ↑ Guelph, Press release from University of. "Bringing a two-qubit desktop quantum computer to life". Quantaneo, the Quantum Computing Source.
  57. ↑ APC BackUPs UPS Specs
  58. ↑ Cost of APC Back-ups-1500VA-230V
  59. ↑ Cliff, J. "Laptops vs desktops. Personal Computer World" (Document). Incisive Media Limited. ProQuest   213495868.
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