Central
Processing Unit - CPU
At
the core of every computer is a device roughly the size of a
large postage stamp. This device, known as the central processing
unit, or CPU, is the "brain" of the computer. It reads
and executes program instructions, performs calculations, and
makes decisions. The CPU is responsible for storing and retrieving
information on disks and other media. The CPU is made up of
the control unit and the arithmetic/logic unit.
Memory
Unit
Memory
Unit is the internal data storage in a computer. The memory
is composed of a large number of individual memory cells, each
with a unique number called an 'address'. Each memory cell is made
up of a set number of binary digits (bits). Bits can store one
of two values: 1 or 0. A computer's memory is volatile ; its
contents are lost when power is turned off.
Processing |
