Computer Interfacing

Computer interfacing

Keyboard

Mouse

Figure

1.1 A

computer and

its

peripherals.

Not the

only

situation

but one

that

is

easily identified.

The

computer

is

seen

as

the

central element, common

to all

computing situations;

the

number and nature

of the

peripherals

can

change according

to the

requirements

of the

system

The peripherals shown in this figure are: a visual dis-

play unit, or VDU (also known as a monitor); a keyboard;

disk drive unit (hard or floppy); a printer and a mouse.

Figure 1.1 merely shows, in a very general way, how the

computer is central to its peripherals. It does not show

the interfaces mentioned previously, nor does it indicat ...