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wholesale computerPCA personal computer (PC) is a computer whose original sales price, size, and capabilities make it useful for individuals, intended to be operated directly by an end user, with no intervening computer operator. A personal computer may be a home computer, or may be found in an office, often connected to a local area network. The distinguishing characteristics are that the computer is used only (or mostly) by one person at a time, in a very interactive fashion. This is opposite to the batch processing or time-sharing models which allowed large expensive systems to be used by many people, usually at the same time, or large data processing systems which required a full-time staff to operate efficiently. The capabilities of a personal computer have changed greatly since the introduction of electronic computers. By the early 1970s, people in academic or research institutions had the opportunity for single-person use of a computer system in interactive mode for extended durations, although these systems would still have been too expensive to be owned by a single person. The introduction of the microprocessor, a single chip with all the circuitry that formerly occupied large cabinets, lead to the proliferation of personal computers after about 1975. Early personal computers generally called microcomputers, sold often in kit form and in limited volumes, and were of interest mostly to hobbyists and technicians. By the late 1970s, mass-market pre-assembled computers allowed a wider range of people to use computers, focusing more on software applications and less on development of the processor hardware. Throughout the 1970s and 1980s, home computers were developed for household use, offering personal productivity, programming and games. Somewhat larger and more expensive systems (although still low-cost compared with minicomputers and mainframes) were aimed for office and small business use. Workstations are characterized by high-performance processors and graphics displays, with large local disk storage, networking capability, and running under a multitasking operating system. Workstations are still used for tasks such as computer-aided design, drafting and modeling, computation-intensive scientific and engineering calculations, image processing, architectural modelling, and computer graphics for animation and motion picture visual effects. Eventually the market segments lost any technical distinction; business computers acquired color graphics capacity and sound, and home computers and game systems used the same processors and operating systems as office-bound computers. Mass-market computers had graphics and memory comparable to dedicated workstations of a few years before. Even local area networking, originally a way to allow business computers to share expensive mass storage and peripherals, became a standard feature of a home computer. Today a personal computer may be a desktop computer, a laptop computer, or a tablet computer. The most common operating systems are Microsoft Windows, Mac OS and Linux, while the most common microprocessors are the x86 and PowerPC CPUs. Software applications for personal computers include word processing, spreadsheets, games, and a myriad of personal productivity and special-purpose software. Modern personal computers often have high-speed or dial-up connections to the Internet, allowing access to the World Wide Web and a wide range of other resources. While early personal computer owners usually had to write their own programs to do anything useful with the machines, today's users have access to a wide range of commercial and free software which is easily installed. PC |
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| FREE wholesale computer free best wholesale computer Used wholesale computer computer donation used phones computers Juniper Networks is an information technology company based in Sunnyvale, California and founded in 1996. computer donation Cisco Liquidation Diane Kruger nationwide used computer used network hardware laptop computers Juniper Networks designs and sells Internet Protocol network products and services. nationwide used computer Cisco routers Drew Barrymore nationwide used computer used network hardware computer notebooks Juniper also partners with Ericsson, Lucent, and Siemens AG to provide IP/MAPLES network solutions to customers. nationwide used computer Cisco Switch Elisabeth Shue used Cisco forum used network equipment recycling Juniper's products include T-series, M-series, E-series, and J-series families of routers, and the SIX Service Deployment System. used Cisco forum computer Elisha Cuthbert used Cisco router used juniper equipment recycle Juniper Networks Router products used Cisco router computer closeout Elizabeth Hurley used foundry networks used foundry networks desktop computers E-series routers are broadband edge routers. used foundry networks recycling centers Elsa Pataky used juniper equipment used Cisco router computer laptops The E series was developed by Ionosphere, which Juniper acquired in 2002. used juniper equipment recycling center Erika Eleniak used network equipment used test equipment buy computer The E series routers run the Janise operating system. used network equipment recycling Eva Green recycle symbol Eva Longoria used network hardware used surplus computers computer monitors M-series routers are multi service edge routers. used network hardware Cisco Liquidation Famke Janssen used phones used Cisco forum notebook computers T-series routers are large core routers. used phones Cisco routers Free Photos used sun systems used sun systems liquidators MX-series routers are Ethernet services routers. used sun systems Cisco Switch Gillian Anderson used surplus computers nationwide used computer liquidation The J, M, T, and MX series routers run the FreeBSD-derived Juniper operating system JUNES. used surplus computers computer Brittany good used test equipment computer donation recycling centers While the E, M, and T series are all high speed ASICS based devices capable of terminating multiple broadband optical connections, the J series is much lower in speed. used test equipment computer closeout Brittany Murphy |
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