What is computer?
A computer is an electronic machine , designed to make human life easy. The word computer comes from a Latin word “computare” which means to calculate.
Computer just follow the instructions given by the user , computer can`t do anything by it`s own. It contains different – different type of set of instructions to perform the input / output tasks.
The first computer designed on the time of world war – 2 , was known as ENIAC. It used the vacuum tubes and it is very large in size like a room.
How computer works.
The work of computer is totally depends on the person who gives the input to the computer. Computer perform the tasks according the user input.
Let`s see what computer do for fulfill the instructions.
- Takes input from the user with the help of input devices.
- Verify the input.
- Complete the input task.
- Give the output.