Input/Output Devices

Question 1

Define output device

Answer 1

An output device is any device that displays, plays or prints the results of processing operations or status messages related to that processing.

Question 2

Define Hardcopy

Answer 2

Hard copy is permanent printed output from the computer.

Question 3

Define softcopy

Answer 3

Soft copy is a temporary form of output, as produced by a Visual display unit or audio output device.

Question 4

Define Input device

Answer 4

An input device is a hardware device designed to send data and instructions into a computer system

Question 5

The two types of input devices

Answer 5

Direct Entry and Manual Entry

Question 6

Define Direct Entry

Answer 6

process during which data is directly entered into a computer with little or no user intervention.

Question 7

Define Manual Entry device

Answer 7

a process during which data is entered into a computer by a user.

Question 8

Define input medium

Answer 8

An input medium is the material, means or mechanism used to convey the data from its source to the computer system

Question 9

Define printer

Answer 9

a output device that produces tangible visual information from the computer

Question 10

Define impact printer

Answer 10

Impact printers produce output by employing a striking or hammering mechanism

Question 11

Define a dot matrix printer

Answer 11

A dot matrix printer produces output one character at a time by striking an inked ribbon on paper to create the impression.

Question 12

Define non impact printers

Answer 12

Printers that uses spray/toner powder and special paper to print one line/page at a time

Question 13

Types of impact printers

Answer 13

dot matrix
daisy wheel
band/train

Question 14

types of non impact printers

Answer 14

inkjet
laser jet
plotters
thermal

Question 15

Inkjet printer

Answer 15

a non impact printer that uses a cartridge that will spray the ink unto the paper

Question 16

Thermal Printer

Answer 16

a non impact printer that uses heat on chemically treated paper to form characters

Question 17

laser printer

Answer 17

a non printer that uses toner or/and heat bars to print

Question 18

Plotters

Answer 18

special purpose output device that draws with pens for graphics, building drawings

Question 19

Daisy wheel

Answer 19

a printer that uses a petal and a fixed wheel to form characters and only one font can be printed at a time

Question 20

Point of Sale system

Answer 20

a combination of input and output devices that allow the business operators to perform more efficiently

Question 21

Touch terminal

Answer 21

(also called a touch-screen) is operated by touching the display screen to select an option or icon. The screen senses the position of

the pressure applied to the screen, so a touch-screen can replace a mouse for simple applications

Question 22

Barcode Reader/Scanner

Answer 22

a specialised optical mark reader that ’visually’ interprets barcodes. This data capture device scans barcodes and with specialised software, converts them into machine-readable data.

Question 23

Specialised Keyboard

Answer 23

a keyboard that has no set keys but can be programmed to preform a variety of functions. These can consists of symbols, words or even pictures

Question 24

OMR

Answer 24

An optical mark reader (OMR) senses the position of marks made on a preprinted form and converts them into meaningful data. There is no keying-in of data.

Question 25

Optical Character Reader

Answer 25

An input device that scans and reads characters such as letters she numbers

Question 26

Magnetic Ink Character Reader

Answer 26

a automated data entry device commonly used in backs to examine data from cheques