ict systems

Question 1

function of input devices?

Answer 1

components for entering data

Question 2

function of processor?

Answer 2

component that decides what instructions mean and what to do

Question 3

function of output devices

Answer 3

components that show the results of processing

Question 4

function of main and internal memory?

Answer 4

components to store the data being used

Question 5

backing storage

Answer 5

store data and/or instructions when the computer is switched off

Question 6

three types of computer system?

Answer 6

• personal computer
• mainframe computer
• supercomputers

Question 7

use of desktop

advantages and disadvantages

Answer 7

use: web searching,email

ad:
.more internal memory
.faster processors
.more hard disk space

dis:
.fixed position
.takes up more space
.too heavy to carry

Question 8

use of laptop

advantages and disadvantages

Answer 8

use: web searching, email

ad:
.small/lightweight
.portable
.can be used anywheres

dis:
.easily broken/lost/stolen
.small screen can lead to health issues
.no built in mouse

Question 9

use of netbook

advantages and disadvantages

Answer 9

use: web searcing, email

ad:
.small/lightweight
. portable
.can be used anywhere

dis:
.easily/broken/lost
.even smaller than laptop
.limited specification

Question 10

use of embedded

advantages and disadvantages

Answer 10

use: in domestic and industrial appliance

ad:
.perform one task:running in a microwave cooker
.user can input simple instructions
.main instructions don’t need to be altered

dis:
.limited memory

Question 11

use of smartphone

advantages and disadvantages

Answer 11

use: web searching,email

ad:
small/lightweight
portable
can connect by 3g/4g and wifi

dis:
even smaller in size
limited specification
have non standard operating systems

Question 12

use of mainframe+supercomputer

advantages and disadvantages(2)

Answer 12

use: large and fast computers used in banks

ad:
.can process very large amounts of data quickly
. fast calculations

dis:
.expensive
.take large amount of space

Question 13

advantages and disadvantages of joystick

Answer 13

ad: good for moving on screen objects in a computer game
dis: not good for entering

Question 14

advantages and disadvantages of keyboards

Answer 14

ad: good for entering characters eg. letters,numbers and punctuation
dis: not good for specialised symbols

Question 15

advantages and disadvantages of keypad

Answer 15

ad: good for entering numbers
dis: not good for other characters

Question 16

use of microphones

Answer 16

use:capturing sounds

Question 17

use of mouse

Answer 17

selecting icons and for drawing shapes

Question 18

use of a touch screen

Answer 18

entering data by touching

Question 19

use of webcam

Answer 19

capturing still/moving images

Question 20

use of sensors

Answer 20

capture data:temp,light,pressure

Question 21

use of remote control

Answer 21

sends users decisions

Question 22

uses of graphics tablet

Answer 22

draw shapes/images

Question 23

use of a monitor

Answer 23

sees the results of processing

Question 24

use of printer

Answer 24

produces copies of results on paper as a hardcopy