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Pc Hardware: The Idiots Guide
Computer Hardware is a comprehensive term which refers to all the physical parts of a computer including the digital circuitry. The software installed in the computer provides instructions for the hardware to perform necessary tasks. Unlike software and data, which are readily created, modified, or deleted, the hardware of a computer is rarely changed. The interaction between the hardware and the software, or more clearly, the boundary between the computer hardware and software, is a special type of software, known as firmware.
Most computer hardware is not seen by common people as it is usually comes in embedded systems in compact disc players, electrocardiograph machines, microwave ovens, automobiles, and other devices. The computer hardware familiar to normal users is the personal which form only a small portion of the out there in the market.
Personal Computer Hardware
Generally a personal computer consists of a chassis or a case in desktop and comprises of the following parts.
Motherboard – Motherboard or system board comes with slots for expansion cards and holding parts including:
Central Processing Unit (CPU) – one of the main parts of a computer which interprets and executes instructions.
Random Access Memory (RAM) – the primary storage for program execution and short data storage.
Buses - Also known as data bus or computer bus, a bus is a subsystem which helps to transfer data or power between computer components in a computer or between computers.
PCI bus
PCI-E or AGP bus
ISA bus (outdated)
USB
Power Supply Unit (PSU) – a system or a device which helps to supply power to every other component inside or attached to the computer. The power system contains a voltage control, transformer, and fan.
Storage Controllers – IDE, SATA, SCSI or any other type which controls storage mediums such as hard disk, floppy disk or CD-ROM drives. The controls
Ray-tracing, the PC's next killer-app?
Ray-tracing could well be the next killer-app providing a quantum leap in PC gaming realism, just like 3Dfx Voodoo Graphics did in the '90s.
Obsolete computer hardware, remember this?
Finding a few boxes with obsoleted computer hardware and games brings back memories of a bygone age of computing.
Made in China, a security risk?
Recent reports of counterfeit computer hardware from China have once again sparked the discussion on whether this poses a security risk.
Global warming, fact or farce?
Global warming and the environment: topics that have been discussed numerous times. Here is another look at what we, as end users, can do.
Is the HD-DVD versus Blu-ray format war finally over?
Is HD-DVD fighting a losing battle and will Blu-ray prevail or will HD-DVD's price and backwards compatibility win the consumer over?
Will Microsoft keep missing the boat?
Microsoft often pitches itself as the great innovator and its products as innovative, but are they really? Here is a closer look.
Environmentally friendly PCs, a new trend for 2008?
Performance per Watt seems to be a key element in modern processor design, upping the power efficiency of the PC. Will this trend continue?
Is AMD starting to lose its marbles, again?
A closer look at how AMD works their PR muscle to unsuccessfully try and steer the press and the public opinion in a direction they see fit.
How EA games pushed me to pirate Crysis
While Crysis is available in the US, Europe is left to wait with pricing increased by almost double with no apparent benefit or reason.
Nvidia GeForce 8800GT, caught in a bit of a crysis?
Nvidia's 8800GT could turn out to be their best selling video card to date, that is if you can find one; here is a look at the current availability.
are installed directly on the mother board or on expansion cards.
Video Display Controller –helps to generate the output for the computer display.
Computer Bus Controllers (FireWire, USB, serial, parallel) - used to connect the computer to an external peripheral devices such as scanners or printers.
Sound Card –a plug-in card which helps to record and play back sound.
Internal Storage –devices used to store data inside the computer for later use.
Hard Disk - the most popular storage device used to store data.
Disk Array Controller
Removable media writers:
Floppy Disk
CD: the most widely used removable media. CD is cheap but fragile.
DVD
DVD-ROM Drive
DVD Writer
DVD-RAM Drive
Zip Drive
USB Flash Drive
Tape Drive
Networking: - devices which allows a computer to connect to the internet or with other computers.
Modem: used for dial-up connections.
Network Card: used to connect a computer with other or with DSL/Cable internet.
Computer Hardware can also include other external components of a computer system such as:
Input Devices
Text Input devices
Pointing Devices
Video or Image Input Devices
Audio Input Device
Gaming Devices
Output Devices
Video or Image Output Devices:
Audio Output Device:
Deitra Braham is an administrator at the Tech Watch technology forums, and also advises with Black Cat Electronics.
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