Devices of a Computer

PARTS OF A COMPUTER

What is Computer? is a device that accepts information (in

the form of digitalized data) and manipulates it for some result based on a program or sequence of instructions on how the data is to be processed.

HARDWARE It refers to objects that you can actually

touch, like disks, disk drives, display screens, keyboards, printers, boards, and chips

System Unit is the part of a

computer that houses the primary devices that perform operations and produce results for complex calculations.

Function: It serves as the home for the main circuits hardware of the computer.

Motherboard

The main circuit board of a computer. It holds together many of the crucial components of a computer, including the CPU, memory and connectors for input and output devices.

CPU (Central Processing Unit) The processor is

the main “brain” or “heart” of a computer system.

Function: It carries out the instructions of a computer program.

Two (2) Types of Memory ROM – (Read Only Memory) ROM is non-

volatile, meaning it holds data even when the power is ON or OFF.

RAM – (Random Access Memory) RAM is volatile, meaning it holds data only when the power is on. When the power is off, RAM's contents are lost.NOTE:  It is a temporary storage area. It holds the data and instructions that the Central Processing Unit (CPU) needs.

Power Supply Unit (PSU) The basic function

of the power supply is to convert the type of electrical power available at the wall socket to the type the computer circuitry can use. 

Hard Disk Drive (HDD) Also known as

hard drive, is a magnetic storage device that is installed inside the computer. The hard drive is used as permanent storage for data.

Optical Drive An optical drive is a

storage device that uses lasers to read data on the optical media. There are three types of optical drives: Compact Disc (CD), Digital Versatile Disc (DVD) and Blu-ray Disc (BD).

Automatic Voltage Regulator (AVR)

It is designed to automatically maintain a constant voltage level.

Uninterruptible Power Supply (UPS)

is a device that allows your computer to keep running for at least a short time when the primary power source is lost. It also provides protection from power surges.

WHAT ARE THE INPUT AND OUTPUT AND STORAGE DEVICES OF A COMPUTER?

is a hardware or peripheral device used to send data to a computer

INPUT DEVICES

Keyboard is the set of typewriter-like keys used to

enter data into a computer.

Mouse A hand-operated

electronic device that controls the coordinates of a cursor on your computer screen as you move it around on a pad.

Touch screen A display screen

that is sensitive to the touch of a finger or stylus. Used in myriad applications, including ATM machines, retail point-of-sale terminals, car navigation and industrial controls.

Digitizer Tablet A graphics drawing

tablet used for sketching new images or tracing old ones. Also called a "graphics tablet," the user contacts the surface of the device with a wired or wireless pen or puck.

Scanning Devices A device that can

read text or illustrations printed on paper and translates the information into a form the computer can use. 

is any piece of computer hardware equipment used to communicate the results of data processing carried out by a computer which converts the electronically generated information into human-readable form.

OUTPUT DEVICES

Computer Display Monitor is the device that displays the

information produced by the video card

LCD Projector is a specialized

computer display that projects an enlarged image on a movie screen.

Smart Board A type of display

screen that has a touch sensitive transparent panel covering the screen, which is similar to a touch screen.

Printer A device that prints text or

illustrations on paper. Examples:

Ink-jet PrinterLine PrinterThermal Printer

a piece of computer equipment on which information can be stored permanently or semi-permanent.

STORAGE DEVICES

Floppy diskette is a random access,

removable data storage medium that can be used with personal computers. Also called a "3.5-inch diskette," it can store up to 1.44 megabytes (MB) of data.

Compact disc (CD) also called optical

disc is a nonmagnetic, polished metal disk used to store digital information.

Digital Versatile Disc (DVD) an optical disc

technology with a 4.7 gigabyte storage capacity on a single-sided, one-layered disk, which is enough for a 133-minute movie. 

Jump drive and USB flash drive

is a plug-and-play portable storage device that uses flash memory and is lightweight enough to attach to a key chain.

Hard drive It is used for storing

and retrieving digital information using rapidly rotating disks (platters) coated with magnetic material.

It is used to store information like software and files.