21.
Pictures or drawings, typically displayed on a VDU to allow users to select program options is called

22.
A monitor looks like a TV set but it does not

23.
The earliest device that qualifies as a digital computer is

24.
One million bytes of information is abbreviated as

25.
Which memory stores the values of variables.

26.
The first IBM PC did not have any

27.
Which device uses much less computer time than the light pen and gives resolutions equal to that of the CRT display.

28.
The process used to set up a programs once the system is operational is

29.
A terminal having local processing capability is

30.
The _____ provides a path between the CPU and peripheral devices, which are connected via interface cards.