Computer Second Generation

1) Computer Fifth Genaration 

2) Computer Fourts Genaration

3) Computer Thirds Genaration 


4) Computer First Genaration

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The computer second generation wa held time 1960-1965.



The second generation computers saw the replacement of the vacuum tubes by transistors. A transistor can be thought of as a switch, but with on moving parts. Because of high speed operation in microseconds and were capable of storing tens of thousands of characters. Manufacturers began producing business oriented computers with more efficient storage and faster input and output capabilities. Second generation computers were reliable, compact in size and virtually free of heat problems.



Programming was done in both machine and symbolic languages. Symbolic languages utilize symbolic names for computer commands and allow the use of symbolic names for items of data. This language is also known as assembly language. Examples of second generation computers are : IBM 1400, CDC 1604, RCA 501, NCR 300, GE 200, IBM 1600 etc.

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Computers First Generation

1) Computer Fifth Genaration 

2) Computer Fourts Genaration

3) Computer Thirds Genaration 


4) Computer Second Genaration

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Developments over the years have resulted in machines with greatly increased speeds, storage, memory and computing power. The developments were so far reaching and numerous that they are generally categorized by generations. Each generation is initiated by significant advances in computer hardware or computer software.



Computer was first made 1942. Computer first generation was 1942-.1959. First generation computers utilized vacuum tubes in their circuitry and for storage of data and instructions. The vacuum tube was bully, caused tremendous heat problems, and was never a reliable device, it caused a great number of breakdowns and inefficient operations. Magnetic cords began to replace vacuum tubes as the principal memory device in the early machines. Small doughnut shaped cores were strung on wires within the computer. Programs were written in machine language employing combinations of 0 and 1. Examples of first generation computers are IBM 650, IBM 704, IBM 705, IBM 709, Mark II, Mark III etc.

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