Hardware- Input/Output

Question 1

Braille

Answer 1

A technique that allows blind people to read by feeling a

pattern of raised dots with their fingers.

Question 2

Braille keyboard

Answer 2

An input device with a small number of keys that can be

used to enter characters as a combination of these keys.

Question 3

Braille printer

Answer 3

An output device that produces Braille documents by

impressing raised dots on a sheet of paper.

Question 4

Digital camera

Answer 4

An input device that makes electronic images or video clips.

Question 5

Eye tracker

Answer 5

An input device that allows a user to control a computer by moving their eye, for example by working out what the user is looking at on a display.

Question 6

Ink-jet printer

Answer 6

A type of printer that works by projecting tiny droplets of ink onto a sheet of paper.

Question 7

Input device

Answer 7

A device that is used to enter data into a computer. It takes
data that a user presents and converts it into binary code.

Question 8

Joystick

Answer 8

An input device, often used in games, that allows a user to move a pointer or a character by tilting a handle backwards, forwards, left or right.

Question 9

Keyboard

Answer 9

An input device that consists of a set of keys that can be

pressed by a user to enter characters into the computer system.

Question 10

Laser printer

Answer 10

A type of printer that works by using a laser to cause

powdered ink to form the desired pattern on a sheet of paper.

Question 11

Microphone

Answer 11

An input device that converts sound into an electrical signal which can be processed by a computer.

Question 12

Monitor

Answer 12

A screen used to display the output of a computer as a

series of individual dots or pixels which can be updated as necessary.

Question 13

Mouse

Answer 13

An input device that can be moved by a user to move a

pointer on a screen. It has one or more buttons to allow the user to perform actions on the items on the screen.

Question 14

Multitouch monitor

Answer 14

A touchscreen monitor capable of recognising several points of contact at the same time.

Question 15

Optical Character Recognition (OCR)

Answer 15

A technique for converting images of printed text into
electronic text by identifying the characters in the image
according to their shape.

Question 16

Output device

Answer 16

A device that presents the result of processing. It converts binary data into a form which can be read by a user, or into a result in the external world.

Question 17

Plotter

Answer 17

A type of printer that uses a mechanical ‘arm’ and a pen to make very precise drawings.

Question 18

Printer

Answer 18

An output device for producing hard copies of documents and images on paper.

Question 19

Refreshable Braille display

Answer 19

An output device that has a row of mechanical dots which can be raised or lowered as required to make Braille characters.

Question 20

Scanner

Answer 20

An input device that converts printed documents and

images into a digital form.

Question 21

Speaker

Answer 21

An output device that converts an electrical signal into sound.

Question 22

Speech recognition

Answer 22

A technique that recognises a user’s speech and converts it into text.

Question 23

Speech synthesis

Answer 23

A technique that converts text into speech.

Question 24

Touchpad

Answer 24

An input device that is used to move a pointer on the screen by making similar movements across a flat surface.

Question 25

Touchscreen monitor

Answer 25

An input/output device that allows a user to interact with the image displayed by touching it.

Question 26

Tracker ball

Answer 26

An input device that allows a user to move a pointer by

moving a ball which is fixed in a socket.

Question 27

Webcam

Answer 27

A digital camera that is used to capture images or, more

usually, video, for transmitting immediately over the internet.