FOR ICTL SUBJECT

1. A computer system is defined as combination of
components designed to process data and store
files.
Consists of four major hardware components ;
input devices, output devices, processor and
storage devices.
Requires hardware, software and a user to fully
function.

2. Software refers to set of instructions that tell the
hardware what to do.
Software also have various functions such
performing computation, communication with
other software and human interaction.
User refer to a person who uses the computer
for any purpose such as work, business and
entertainment.

14. Two typical components of a CPU are the
arithmetic logic unit (ALU), which performs
arithmetic and logical operations, and the
control unit (CU), which extracts
instructions from memory and decodes and
executes them, calling on the ALU