Wednesday, 29 April 2020
Thursday, 26 March 2020
SecondGenerationof computer(1959-1964)
In the Second Generation of Computer, Vacuum tubes were replaced with Transistors. The electronic vacuum tube was invented by Villium Shokli and his friend scientist in Bell laboratory in America. Themain characteristics of computer of this generation are:-
(1)Size was small because of use of transistor.
(2)Use of high level Language like COBOL, FORTRAN, etc.
(3)A very low heat used to come out from transistor. So capacity of regular work was good.
(4)The size of computer was small so weight was also low of this generation computer compare to 1st generation. But transfer was not possible.
(5)One or two person could control it easily.
(6)The processing speed was good compare to 1st generation of computer.
(7)Their prize was low and was easy in use.
(8)Magnetic tape utilized for storing data.
(9)Computer of this generation were mainly Univac,IBM 700, Atlas.etc.
(1)Size was small because of use of transistor.
(2)Use of high level Language like COBOL, FORTRAN, etc.
(3)A very low heat used to come out from transistor. So capacity of regular work was good.
(4)The size of computer was small so weight was also low of this generation computer compare to 1st generation. But transfer was not possible.
(5)One or two person could control it easily.
(6)The processing speed was good compare to 1st generation of computer.
(7)Their prize was low and was easy in use.
(8)Magnetic tape utilized for storing data.
(9)Computer of this generation were mainly Univac,IBM 700, Atlas.etc.
First Generation (1946 -1959)
First computer existed in 1946which name was ENIAC [electronic numerical integrator and calculator]. It was invented by J.P Eckert and J.W. Mauchly at the University of Pennsylvania of U.S.A. It was based on decimal System.It did not have any memory system. It contains 1800 Vaccume tubes, 70000 Resisters, 10000 Capacitors, 150 KW of power, 27 tons weight and required water cooling.
(1)The size of computer was bi g sovery large space required.
(2)Mainly vacuum tube device is used in these computers.(3)Data processing speed was low.
(4)Weight of computer was heavy so transfer was impossible.(5)Electricity was very costly for this generation computer.(6)They generated high amount of Heat.
(7)Punch card was used for storing data.
(8)Many people were necessary to run this computer.
(9)Slow Operating Speed.
(1)The size of computer was bi g sovery large space required.
(2)Mainly vacuum tube device is used in these computers.(3)Data processing speed was low.
(4)Weight of computer was heavy so transfer was impossible.(5)Electricity was very costly for this generation computer.(6)They generated high amount of Heat.
(7)Punch card was used for storing data.
(8)Many people were necessary to run this computer.
(9)Slow Operating Speed.
Generations of computer
In 1946, the first electronic device, vacuum tube based ENIAC computer initiated the evolution of computer era. This Evolution of computer era has witnessed a lot of developments. We Classify this evolution into five Generations on the basis of main Changes occurred.
What is Computer
Definition of Computer
Computer is an electronic device which works on the basis of human intelligence. Computer can be defined as a Machine that can be used for Manipulating data according to a list of Instructions.Technically, a computer is a programmable machine. This means it can execute a programmed list of instructions and respond to new instructions that it is given. Today, however, the term is most often used to refer to the desktop and laptop computers that most people use.When referring to a desktop model, the term "computer" technically only refers to the computer itself --not the monitor, keyboard, and mouse. Still, it is acceptable to refer to everything together as the computer. If you want to be really technical, the box that holds the computer is called the "system unit."Some of the major parts of a personal computer (or PC) include the motherboard, CPU, memory (or RAM), hard drive, and video card. While personal computers are by far the most common type of computers today, there are several other types of computers. For example, a "minicomputer" is a powerful computer that can support many users at once. A "mainframe" is a large, high-powered computer that can perform billions of calculations from multiple sources at one time. Finally, a "supercomputer" is a machine that can process billions of instructions a second and is used to calculate extremely complex calculations.It does following for programmers during process-It gets data & Instructions from user.Store Data & Instructions in Memory.Processing.Outputs(Result.
Background of computer
Computer's father is Charles Babbage.He studied in California University of America. The first computer of India is made by Siddhartha. First equipment which was made for counts, that name was ABACUS.It was made in china before thousand year‟s age.
What is the mean of Computer
The word Computer came from the word Compute which means is to Calculate. So a computer is normally considered to be a calculating device that can perform arithmetic operations at an enormous speed, but,more accurately, a computer may be defined as a device that operates upon data.
Computer is an electronic device which works on the basis of human intelligence. Computer can be defined as a Machine that can be used for Manipulating data according to a list of Instructions.Technically, a computer is a programmable machine. This means it can execute a programmed list of instructions and respond to new instructions that it is given. Today, however, the term is most often used to refer to the desktop and laptop computers that most people use.When referring to a desktop model, the term "computer" technically only refers to the computer itself --not the monitor, keyboard, and mouse. Still, it is acceptable to refer to everything together as the computer. If you want to be really technical, the box that holds the computer is called the "system unit."Some of the major parts of a personal computer (or PC) include the motherboard, CPU, memory (or RAM), hard drive, and video card. While personal computers are by far the most common type of computers today, there are several other types of computers. For example, a "minicomputer" is a powerful computer that can support many users at once. A "mainframe" is a large, high-powered computer that can perform billions of calculations from multiple sources at one time. Finally, a "supercomputer" is a machine that can process billions of instructions a second and is used to calculate extremely complex calculations.It does following for programmers during process-It gets data & Instructions from user.Store Data & Instructions in Memory.Processing.Outputs(Result.
Background of computer
Computer's father is Charles Babbage.He studied in California University of America. The first computer of India is made by Siddhartha. First equipment which was made for counts, that name was ABACUS.It was made in china before thousand year‟s age.
What is the mean of Computer
The word Computer came from the word Compute which means is to Calculate. So a computer is normally considered to be a calculating device that can perform arithmetic operations at an enormous speed, but,more accurately, a computer may be defined as a device that operates upon data.
Wednesday, 25 March 2020
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