Computer Awareness: 15 Input and Output Devices Everyone Needs to Know


Dear Reader, In past there were questions related to input and output devices in bank exams. Hence, you must learn them well. But most of the material available already are too lengthy. Below is a short list that is easy to learn.

After reading the details, do not forget to attend the online test.

First, you will find 12 input devices followed by 3 output devices.

List of 12 Input Devices
(An Input Device is used to feed data into the computer system.)

Keyboard – Keyboard is a primary input device that helps to input data. The standard keys are as follows.

Types of Key Keys
Typing Keys A – Z and punctuation symbols, etc.
Numeric Keys 0 – 9
Function Keys F1 – F12
Control Keys Arrow keys, Home, End, Insert, Delete, Backspace, Page Up, Page Down, Control(Ctrl), Alternate(Alt), Escape(Esc).
Special Purpose Keys Enter, Shift, Caps Lock, Num Lock, Space bar, Tab, and Print Screen.

Mouse – Mouse is a pointing device. The mouse can be used to control the position of the cursor.

Joystick – Joystick is also a pointing device that is used to move the cursor on the monitor. Few applications of the joystick include playing computer games, Computer Aided Designing (CAD), etc.

Light Pen – Light pen is a pointing device that looks like a pen. It is used to select a menu item, draw pictures, etc.

Track Ball – You will often find track ball in a notebook or a laptop computer. This device can be used instead of a mouse.

Scanner – You will use a scanner when you have to transfer information from paper to computer memory.

Digitizer – A digitizer converts analog information into digital form.

Microphone – Microphone is used to input sound. You can use this device for various applications like adding sound to a multimedia presentation, for mixing music, etc.

Magnetic Ink Card Reader (MICR) – MICR is used to read characters printed using special magnetic ink. (You will usually find this device in banks. Bank staff use MICR in check processing.)

Optical Character Reader (OCR) – OCR is used to read printed text. OCR scans text character by character, converts them into a machine readable code and stores the text in memory.

Bar Code Reader – You can use this device to interpret bar codes data. (You will often find this device in supermarkets.)

Optical Mark Reader (OMR) – OMR is used to read shades made by pen or pencil. (Exam boards, educational institutions, etc., often use this device for evaluation.)

List of 3 Output Devices
(These are the devices that give you data from the PC).

Monitor – Monitor is the most common output device of a computer. You can also call this Visual Display Unit (VDU).

Printer – Printer is used to print information on paper.

Plotter – You can use a plotter to print images in vector graphics format.

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