Computers - Hardware

A personal computer is made up of multiple physical components of computer hardware, upon which can be installed an operating system and a multitude of software to perform the operator's desired functions. Though a PC comes in many different form factors, a typical personal computer consists of a case or chassis in a tower shape (desktop) and the following parts: The motherboard is the "body" of the computer. Components directly attached to the motherboard include: The central processing unit (CPU) performs most of the calculations which enable a computer to function, and is sometimes referred to as the "brain" of the computer. It is usually cooled by a heat sink and fan.

The chipset mediates communication between the CPU and the other components of the system, including main memory. RAM Stores all running processes (applications) and the current running OS. RAM Stands for Random Access Memory The BIOS includes boot firmware and power management. The Basic Input Output System tasks are handled by operating system drivers. Internal Buses connect the CPU to various internal components and to expansion cards for graphics and sound. External Bus Controllers support ports for external peripherals. These ports may be controlled directly by the southbridge I/O controller or based on expansion cards attached to the motherboard through the PCI bus.

Includes power cord, switch, and cooling fan. Supplies power at appropriate voltages to the motherboard and internal disk drives.and it convert ac surrent to dc corrent and also provide diffrent difrent voltage to diffrent part of mac...such as hard disk,cd rom , motherboard...cpu socket etc. Hardware that keeps data inside the computer for later use and remains persistent even when the computer has no power. Produces the output for the visual display unit. This will either be built into the motherboard or attached in its own separate slot (PCI, PCI-E, PCI-E 2.0, or AGP), in the form of a graphics card.

Hard disk - for medium-term storage of data. Solid-state drive - a device similar to hard disk, but containing no moving parts and stores data in a digital format. RAID array controller - a device to manage several internal or external hard disks and optionally some peripherals in order to achieve performance or reliability improvement in what is called a RAID array. Enables the computer to output sound to audio devices, as well as accept input from a microphone. Most modern computers have sound cards built-in to the motherboard, though it is common for a user to install a separate sound card as an upgrade. Most sound cards, either built-in or added, have surround sound capabilities.