Brief histpry of 4g technology of computers?

Answer 1

The present day computers are in fact fourth generation (4g) computers . these computers came into existence around 1975, and used Large scale integrated circuits (L.S.I) and Very Large scale integrated circuits (V.L.S.I) most commonly known as MICROPROCESSORS . The first microprocessor INTEL-4004 was produced in 1971 and used in this used in this generation computers. A single silicon chip of LSI or VLSI has thousands if ICs built in it. later, Very Large scale integrated (V.L.S.I) circuits replaced LSI circuits . A computer which earlier used to occupy a room is now placed on a desktop or in a brief case. the computer memory is of two types fixed one of semiconductor material and removable one is the form of magnetic diskette (hard disk, floppy ,etc) . An extensive development has also taken place towards graphical display of data . A personal computer (PC) is an example of fourth generation computer. Its CPU is called microprocessor which is fabricated on a single semiconductor chip . the use of a computer is now extended to almost anything: making a calculation, train reservation , medical scanning, entertainment , etc . The making of calculation is called off-line use of a computer. the present age computers are included in fourth generation computers . some examples are

IBM 3033 , Burroughs b7700, HP 3000, Apple mac air , Intel core, Intel P IV , etc

The main features of 4g computers are

1. They use Large Scale and Very Large Scale Integrated circuits.
2. large storage capacity and file processing speed.
3. Modular design and compability between equipment developed by different manufacturers
4. Many sophisticated programs for special application are available
5. they were versatile with regard to its input/ output devices.
6. audio response terminals are made available
7. word processing is made possible
8. introduced electronic mailing system(email)
9. Faster
10. Energy efficient in comparison to other generations(older computers used to consume lots of electricity and produce lots of heat )
11. accuracy (computer always gives correct results . sometimes we might not get the required result that is because of wrong data input so computer calculates the the wrong data and gives the correct result ,this is known as GIGO )
12. based upon the theory of input, processing and output
13. compatibility and mobility is introduced
    
14. user friendly unlike other generation of computers where you need to be an expert to operate a computer