Types of Computer Hardware

Isabel asked:

Computer hardware is a physical part of a computer that executes within the hardware. It is unlike computer software or data that can be frequently changed, modified or erased on a computer. Computer hardware is not frequently changed and so is stored in hardware devices such as read only memory (ROM) where it is not readily changed.

Most computer hardware is embedded and so is not visible to normal users. Below are the different types of hardware’s found in a computer.

Ø Motherboard: It is the central or primary circuit board making up a complex electronic system such as a computer. A motherboard is also known as a main board, logic board or system board.

Ø Central processing Unit: A CPU is the main component of a digital computer that interprets instructions and process data in computer programs.

Ø Random Access Memory: A RAM allows the stored data to be accessed in any order. RAM is considered as the main memory of the computer where the working area is used for displaying and manipulating data.

Ø Basic Input Output System: BIOS prepares the software programs to load, execute and control the computer.

Ø Power Supply: Power Supply supplies electrical energy to an output load or group of loads.

Ø Video Display Controller: It converts the logical representation of visual information into a signal that can be used as input for a display medium.

Ø Computer Bus: It is used to transfer data or power between computer components inside a computer or between computers.

Ø CD-ROM drive: It contains data accessible by a computer

Ø Floppy disk: It is a data storage device

Ø Zip Drive: It is a medium capacity removable disk storage system.

Ø Hard Disk: It is a non-volatile data storage system that stores data on a magnetic surface layered unto hard disk platters.

Computer Parts – No More a Hidden Business

Harry Johnson asked:

Computer parts are an important peripheral for any business houses today. Computer hardware is the physical part of a computer, including the digital circuitry, as distinguished from the computer software that executes within the hardware.

The use of computer is endless you can use a computer for printing reports, documents, publishing newsletters or for just printing photos. The hardware of a computer is infrequently changed, in comparison with software and data, which are “soft” in the sense that they are readily created, modified or erased on the computer.

Most computer hardware is not seen by normal users. It is in embedded systems in automobiles, microwave ovens, electrocardiograph machines, compact disc players, and other devices.

PC hardware:

A typical personal computer consists of a case or chassis in desktop or tower shape and the following parts:

Motherboard: The Motherboard is possibly the most important part of the computer. The motherboard is the foundation of any PC. All the critical subsystems, including the CPU, system chipset, memory, system I/O, expansion bus, and other critical components run directly off the motherboard. Likewise, the interconnections among these components are laid into the motherboard itself.It slots for expansion cards and holding parts including :

Central Processing Unit(C P U): It is the core of computer, it control the main processing process.

Random Access Memory (RAM): It is for Program execution and short term data storage.

Basic Input-Output System (BIOS): All computer hardware has to work with software through an interface. The BIOS gives the computer a little built-in starter kit to run the rest of software’s from floppy disks (FDD) and hard disks (HDD). The BIOS is responsible for booting the computer by providing a basic set of instructions.

Keyboard: The keyboard is one of the simplest parts of the computer to understand. This chapter goes beyond the keyboard basics, however, to show you how to do tasks such as inserting special characters or typing in another language. This chapter also looks at how to take care of your keyboard and how to take care of yourself when using it.

Power supply – A case that holds a transformer, voltage control and fan.

Storage controllers : It is of IDE, SATA, SCSI or other type, that control hard disk, floppy disk, CD-ROM and other drives; the controllers sit directly on the motherboard (on-board) or on expansion cards

Video display controller: It produces the output for the computer display.

CD – the most common type of removable media, cheap but fragile.

CD-ROM Drive

CD Writer

DVD – DVD- ROM Drive, DVD-RAM Drive, DVD Writer.

Tape drive – mainly for backup and long-term storage.

Internal storage – keeps data inside the computer for later use.

Sound card – It translates signals from the system board into analog voltage levels, and has terminals to plug in speakers.

Networking – to connect the computer to the Internet and/or other computers, to connect one to other computers you required the following thing:

Modem – for dial-up connections

Network card – for DSL/Cable internet, and/or connecting to other computers.

Other peripherals

Hot Hardware – Popular forums for those interested in learning or exchanging info on graphics cards, motherboards, processors, drives and cases, or shoot the breeze in The Lounge.

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