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desktop computersdesktop computersA desktop computer is an electronic machine computer that converts raw data into meaningful information, made for use on a desk in an office or home and is distinguished from portable computers such as laptops or PDAs. Desktop computers are also known as microcomputers. There are four types of desktop computers: home computers, or personal computers; workstations, Internet servers, and special communications computers. Desktops are currently the most affordable computers and ubiquitous in businesses, schools, and households; they are used for performing office tasks, organizing digital photos, video editing, and Internet access. Nearly all desktop computers are modular, with components that can easily be replaced or upgraded. Desktop computers come in a variety of case styles ranging from large vertical towers to small form factor models that can be tucked behind an LCD monitor. desktop computers Hardware An exploded view of a modern desktop computer: Display Motherboard CPU (Microprocessor) Primary storage (RAM) Expansion cards Power supply Optical disc drive (ODD) Secondary storage (HDD) Keyboard Mouse The hardware in a desktop computer is modular, making it easy for someone with intermediate knowledge of a computer to modify one. Desktop computers are generally more affordable than notebook computers. This is because no extra effort is needed to miniaturize the components, nor to find design solutions to the thermal management problems that arise from the use of components that emit heat in a compact space. [edit] Components Fan - cools the computer. These are present on most computers. There are often multiple, one to cool the processor(see below), one in the power supply, and possibly additional ones for the graphics card and general cooling. Motherboard (a.k.a. mainboard) - links all of the components together and routes data. HDD (hard disk drive) - location where all information can be stored even when power is off. ODD (optical disc drive) - reads most or all types of CDs and/or DVDs. Processor - The main brain of the computer. CPU Cooler - cools the processing unit. Typically a fan combined with a heatsink. RAM - short-term data storage, volatile (data is erased when the computer is powered off) Graphics card - codes video output and delivers to monitor. Physics card - performs physics computations in some modern games. Sound card - codes sound output and delivers to speakers. Speakers - deliver sound. Modem - used to access data via a telephone line (dial-up connection). Used to access BBS and the Internet. Network card - allows the computer to be linked to a computer network where it can communicate with other computers. Also used as a means of accessing the Internet via a broadband connection. Computer PSU (power supply unit) - A device that provides power to the rest of the computer parts. FDD (floppy disk drive) - Reads and Writes floppy disks. Although largely supplanted by CDs and Flash Drives, is still common on many systems, and may be required during set-up on certain operating systems. 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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