Sabbir M SalehLecturer, CSE

UniSA

Computer Peripherals

Input/OutputDevices

INPUT PERIPHERALS

1. Keyboard2. Mouse3. Microphone4. Scanner5. Webcam6. Bar code reader

7. Optic pen8. Joystick9. Touch screen

monitor

INPUT DEVICES ARE PROVIDING DATA TO COMPUTER. THE MOST USED ARE:

Following

OUTPUT PERIPHERALS

1. Screen or monitor2. Printer3. Speakers4. Headphones5. Plotters6. Fax

DEVICES THAT ARE USED THE COMPUTER TO SHOW RESULTS. THE MOST USED ARE:

Back

Keyboard

Is used to

Mouse

Is used to

Microphone

Is used to

Scanner

Is used to

Webcam

Is used to

Bar Code Reader

Is used to

Optic Pen

Is used to

Joystick

Is used to

Touch Screen Monitor

Is used to

Screen or Monitor

Is used to

Printer

Is used to

Speaker

Is used to

Headphone

Is used to

Plotters

Is used to

FAX

Is used to

KeyboardThe keyboard is the most important input device of a computer and used to enter data or information to the computer, is composed of keys: letters, numbers, punctuation marks and special functions.

Mouse It is a small input device which can control the

movement of a pointer on the screen, sliding on a flat surface. Additionally, certain actions can be executed by pressing a button mouse

Click: is press the left button (most often) or the right mouse button and release immediately.

Double click: is to make two quick consecutive clicks a mouse button (Usually the left). Equivalent to pressing Enter.

MicrophoneIs an electroacoustic transducer. Its function is to transform (translate) the vibrations due to acoustic pressure exerted on the capsule by the sound waves into electrical energy or record sound from any place or item.

ScannerA scanner lets you copy an image or a printed document on your computer.

WebcamA web camera (webcam English) is a small digital camera connected to a computer, which can capture images and transmit them via the Internet, either to a web page or one or more computers in private.

Webcams are usually formed by a lens, image sensor and the circuitry needed to handle them.

Bar Code ReaderScanner using a laser reads a bar code and outputs the number that shows the bar code, no imageBar codes are read from a small spot of light on the bar code symbol printed

Optic PenThe optic pen is an ordinary pen that is used on a computer screen or other surface to read them or serve as a pointing device and usually replaces the mouse or with less success, to the digitizer. Is connected to an electric cable and requires special software to operate. Using the pen touches the screen the user can choose the commands of the programs (the equivalent of a mouse click) or by pressing a button on one side of the stylus or pressing it against the surface of the screen.

JoystickIs a device used to play on the pc.

Touch Screen MonitorIs a screen by tapping directly on the surface allows the entry of data and commands to the device. In turn, acts as output device, showing the results previously entered

Screen or MonitorThe computer monitor or computer screen, but it is also commonly known as 'screen' is an output device through an interface, shows the results of computer processing.

PrinterA printer is a computer peripheral that allows you to produce a permanent copy text or graphics of documents stored in electronic form, print them on physical media, usually paper or transparencies, using ink or laser technology

SpeakerIs an electroacoustic transducer used for sound reproduction. One or more speakers can form a sound barrier.

HeadphoneHearing aids receive sound through a microphone, which then converts sound waves into electrical signals and then sends the sound to the ear through a speaker

PlottersIs a computer printing device for printing vector graphics.

FAXCalled fax, short for facsimile, a system that allows a remote transmission over the telephone line or graphics written (fax).