Introduction of Computer
→ Full form of Computer Word.
→Full Form of Computer Meaning Commonly Operated Machine Particularly used for Technical and Educational Research.
Characteristics of Computers:-
There are following characteristics of computer that is.
→ As you know computer can work very fast. It can perform in a few seconds, computer can perform millions (1,000,000) of instructions and even more per second. In other word computer can do in a few minutes .
→ Accuracy means computer calculate without mistake until the user do not enter the wrong data.
→ It can continuously work for hour without creating any error and without tiredness.
→ Versatility is on of the most wonderful things about a computer. It means the capacity to perform completely different type of work such as you may use computer to prepare payroll slips,electricity bill etc.
5) Power of remembering
→ Computer has the power of storing any amount of information data. Any information can be stored and recalled as long time.
6) No Feelings
→ They have no feeling no emotion because they are machines.
Generation of Computer
→"Generation" that means framework for the growth of computer industry based on technology developed include the hardware and software environment.
Types of Generation
There are Five generation of computer is used today that is.
1) First Generation(1942-1955)
The First Generation Computer used Vacuum Tube. J.P.Eckert and J.W.Mauchy invented the first successful electronic computer called ENIAC. ENIAC Stand for "Electronic Numeric Integrated And Calculator".
2) Second Generation(1955-1964)
The Second generation computers were use of Transistor instead of vacuum tubes.
3) Third Generation(1964-1975)
→ The Third Generation use of Integrated Circuits(IC).
→ IC invented by Robert Noyce and Jack Kilby In 1958-1959. where IC was a single component containing number of transistors.
4) Fourth Generation(1975-1989)
5) Fifth Generation(1989-Present)
This generation is based on artificial intelligence.and This generation is based on ULSI(Ultra Large Scale Integration) technology.
Desktop, Laptop, NoteBook, UltraBook, Chromebook and other etc.
Types of computer:-
1) Micro Computer
Micro Computer is known as personal computer. Microcomputer were built single chip, that is CPU (Central Processing Unit), data memory (RAM, ROM), and I/O buses.
In other word technical meaning of the microcomputer is a micro controller.It is used in the home appliances such as TV, Mobile, refrigerator etc.
2) Mini Computer
The Mini computer is used in multi user system in which various user can work at the same time. this types of computer generally used for processing large volume of data in a organisation.
This types of computer are generally operate at very high speed, very large storage capacity and can the workk load of many users.
4) Super Computer
They are the fastest and most expensive computer. they have high processing speed compared to other computer.