Input and Output Devices

Question 1

Main input device of computers

Answer 1

Keyboard

Question 2

Kinds of keys in keyboards

Answer 2

Typing keys, Numeric keys, Function keys, Control keys

Question 3

A pointing device that helps users to select items on screen by controlling the movement of the pointer.

Answer 3

Mouse

Question 4

A pointing device to control the position of the cursor of the screen

Answer 4

Trackball

Question 5

A small, flat, rectangular stationary pointing device with a sensitive surface of 1.5” - 2”

Answer 5

Touchpad

Question 6

Handheld devices

Answer 6

Joystick, stylus, touchscreen

Question 7

A cursor/control device widely used in computer games and CAD/CAM applications

Answer 7

Joystick

Question 8

A pen-shaped device to enter information or write on the touch screen of a handheld device

Answer 8

Stylus

Question 9

A display screen that can identify the occurrence and position of a touch inside the display region.

Answer 9

Touch screen

Question 10

Uses light as a source of input for detecting or recognizing different objects such as characters, marks, codes, and images

Answer 10

Optical Input Devices

Question 11

Works by directing a beam of light across the barcode and measuring the amount of light reflected back

Answer 11

Barcode reader

Question 12

Captures images, printed text, photographs, etc. and converts them into digital images for editing and display on computers.

Answer 12

Image scanner

Question 13

The process of converting printed materials into text or word processing files that can be easily edited and stored.

Answer 13

Optical Character Recognition (OCR)

Question 14

The process of electronically extracting data from marked fields, such as checkboxes and fill-in fields, on printed forms

Answer 14

Optical Mark Recognition (OMR)

Question 15

Used to verify the legitimacy of paper documents, especially bank checks

Answer 15

Magnetic Ink Character Reader (MICR)

Question 16

Used to either capture or create sound

Answer 16

Audio Input Devices

Question 17

Used to capture video from the outside world into the computer

Answer 17

Video Input Devices

Question 18

Electromechanical devices that accept digital data from the computer and convert them into human-understandable form

Answer 18

Output devices

Question 19

Specialized vacuum tubes in which images are produced when an electron beam strikes a phosphorescent surface

Answer 19

CRT Monitor

Question 20

A device that takes an image from a digital source and projects it onto a screen or another surface

Answer 20

Projectors

Question 21

Two categories of Projectors

Answer 21

LCD Projectors & DLP Projectors

Question 22

Produce a physical form of output. For example, the content of a file printed on paper

Answer 22

Hard Copy Output Devices

Question 23

Print characters by striking an inked ribbon against the paper

Answer 23

Impact printers

Question 24

Print characters as a pattern of dots

Answer 24

Dot Matrix Printers

Question 25

The wheel is rotated in such a way that the character to be printed is positioned just in front of the printer ribbon

Answer 25

Daisy Wheel Printers

Question 26

High speed printers in which one typed line is printed at a time

Answer 26

Line printers

Question 27

Much quieter as their printing heads do not strike the paper

Answer 27

Non-impact printers

Question 28

Works at very high speeds and produces high quality text and graphics

Answer 28

Laser printers

Question 29

Kinds of Input Devices

Answer 29

Keyboard, handheld device, optical device, pointing device, audio-visual device

Question 30

Pointing devices

Answer 30

Mouse, trackball, trackpad

Question 31

Handheld devices

Answer 31

Pen (stylus), touchscreen, joystick

Question 32

Optical Devices

Answer 32

Barcode readers, scanners, OCR, OMR, MICR