A bay is an opening

inside the system unit in

which you can install

additional equipment

– A drive bay typically

holds disk drives

A bus allows the various

devices both inside and

attached to the system

unit to communicate with

each other

– Data bus

– Address bus

Word size is the number

of bits the processor can

interpret and execute at a

given time

A port is the point at which a peripheral attaches to or

communicates with a system unit (sometimes referred

to as a jack)

A connector joins a cable to a port

A computer chip containsintegrated circuits

An expansion slot is a

socket on the motherboard

that can hold an adapter

card

An adapter card enhances

functions of a component of

the system unit and/or

provides connections to

peripherals

– Sound card and video card

Plug and Play, the computer automatically

can configure adapter cards and other peripherals

as you install them

Removable flash memory includes:

– Memory cards, USB flash drives, and PC

Cards/ExpressCard modules

Volatile memory

Nonvolatile memory

Multi‐core processor

Dual‐core processor

Quad‐core processor

The power supply converts the wall

outlet AC power into DC power

Some external peripherals have an AC

adapter, which is an external power

supply