Definition of a computer
Computer is an electronic device, used for performing
calculations and controlling
operations that be either expressed in logical or numerical
terms.
⮚ It stores and process data in binary form according to
instructions given to it
in a variable program.
⮚ Computer need to be told exactly what to do and how to do to
accomplish a
task
⮚ It is a combination of hardware and software
⮚ Software is the set of instructions given to the computer to
perform a task
⮚ The physical parts that make up computer are called
hardware, which are
made of circuits and transistors
The three main operations of computer are
1) Takes in data and instructions (input)
2) works with the data (processing)
3) puts out information (output)
Characteristics of a Computer:
The following are the main characteristics of a computer
1. Speed: Computer is able to process the data and give the
output in fractions of
seconds such that required information is available to the user
on time and
hence enables him to take right decisions at the right time.
