Generation:
It simply says classification of all past , present and future computers. Classification is done on different basis like, speed, time of development ,size, major component used in them, calculations done by them etc. Under classification, we can get only electronic computers; we do not include non-electronics computers. This grouping of computers makes our understanding level easier and deeper. Sometimes, we also say a time period (era) of development of all level computers till time.
Following are the types of generation with distinct features.
First generation computer: It has following features:
1. Vacuum tubes were the only electronic component used in them.
2. The computers were very large in size,slow in speed and not so reliable.
3. They heated very soon due to thousands of vacuum tubes.They consumed a large amount of energy.
4. Air conditioning was required.
5. Constant maintenance was required.
6. Nonportable.
7. Costly commercial production.
8. Limited commercial use.
9. Used machine language only.
10. Used magnetic drums which provide very less data storage and punch cards for input. batch processing was used.
11. Not versatile and very faulty.
e.g. UNIVAC1
Second generation computers’ features:
1. transistors were used.
2. Smaller in size ,better speed as compared to the first generation computers.
3. The 2nd generation Computers were more reliable
4. multiprogramming was possible
5. Wider commercial use
6. Better portability as compared to the first generation computers.
7. Used faster peripherals like tape drives, magnetic disks, printer and magnetic core as primary memory etc.
8. Supported machine and assembly languages
9. Accuracy improved.
10. batch processing system was used.
11. Punched cards were used for input.
e.g.IBM 1620
Third generation computers’ features:
1. IC was used.It simply says classification of all past , present and future computers. Classification is done on different basis like, speed, time of development ,size, major component used in them, calculations done by them etc. Under classification, we can get only electronic computers; we do not include non-electronics computers. This grouping of computers makes our understanding level easier and deeper. Sometimes, we also say a time period (era) of development of all level computers till time.
Following are the types of generation with distinct features.
First generation computer: It has following features:
1. Vacuum tubes were the only electronic component used in them.
2. The computers were very large in size,slow in speed and not so reliable.
3. They heated very soon due to thousands of vacuum tubes.They consumed a large amount of energy.
4. Air conditioning was required.
5. Constant maintenance was required.
6. Nonportable.
7. Costly commercial production.
8. Limited commercial use.
9. Used machine language only.
10. Used magnetic drums which provide very less data storage and punch cards for input. batch processing was used.
11. Not versatile and very faulty.
e.g. UNIVAC1
Second generation computers’ features:
1. transistors were used.
2. Smaller in size ,better speed as compared to the first generation computers.
3. The 2nd generation Computers were more reliable
4. multiprogramming was possible
5. Wider commercial use
6. Better portability as compared to the first generation computers.
7. Used faster peripherals like tape drives, magnetic disks, printer and magnetic core as primary memory etc.
8. Supported machine and assembly languages
9. Accuracy improved.
10. batch processing system was used.
11. Punched cards were used for input.
e.g.IBM 1620
Third generation computers’ features:
2. More reliable,Smaller in size,Generated less heat and Faster in comparison to previous two generations
3. Lesser maintenance
4. Still costly
5. supported Remote processing, Timesharing, Realtime, Multiprogramming Operating System.
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