The document discusses the five generations of computers from the 1940s to present. The first generation used vacuum tubes and were large, consuming significant power. The second generation used transistors, making computers smaller and more efficient. The third generation used integrated circuits, further reducing size and power usage. The fourth generation used microprocessors and marked the development of personal computers and networks. The fifth generation uses artificial intelligence techniques like neural networks and expert systems. Each generation was enabled by new technological developments that made computers more powerful, compact, and accessible over time.
Generations of Computer
Introduction:
A computer is an electronic device that manipulates information or data. It has the ability to store, retrieve, and process data.
Nowadays, a computer can be used to type documents, send email, play games, and browse the Web. It can also be used to edit or create spreadsheets, presentations, and even videos. But the evolution of this complex system started around 1946 with the first Generation of Computer and evolving ever since.
There are five generations of computers.
it is all about the generation of computer. explained in a detailed way. helpful for those students who is seeking information about computer generation.it is available in one place
Generations of Computer
Introduction:
A computer is an electronic device that manipulates information or data. It has the ability to store, retrieve, and process data.
Nowadays, a computer can be used to type documents, send email, play games, and browse the Web. It can also be used to edit or create spreadsheets, presentations, and even videos. But the evolution of this complex system started around 1946 with the first Generation of Computer and evolving ever since.
There are five generations of computers.
it is all about the generation of computer. explained in a detailed way. helpful for those students who is seeking information about computer generation.it is available in one place
This PPT is about the Various generations of Computers. This introduces and discussed about five generations of Computers, thier components, advantages and disadvantages. The PPT consists of Images which could lead to clear understanding by the end user. The numerical data is also available like the starting and Ending year of a particular generation. It also discusses the major components used, the technologies used etc..
Generation in computer terminology is a change in technology a computer is/was being used. Initially, the generation term was used to distinguish between varying hardware technologies. Nowadays, generation includes both hardware and software, which together make up an entire computer system.
1st generation of computers (Based on Vacuum tubes)
2nd generation of computers (Based on Transistors)
3rd generation of computers (Based on Integrated circuits ICs)
4th generation of computers (Based on Microprocessors)
5th generation of computers (Based on Artificial Intelligence)
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2. Generations of Computer
The computer has evolved from a large-sized simple
calculating machine to a smaller but much more powerful
machine.
The evolution of computer to the current state is defined in
terms of the generations of computer.
Each generation of computer is designed based on a new
technological development.
Currently, there are five generations of computer.
3. First Generation (1940 to 1956): Using Vacuum Tubes
The first generation of computers used vacuum tubes for
circuitry and magnetic drums for memory.
The input to the computer was through punched cards. The
output was displayed as printouts.
The first generation computers used a large number of vacuum
tubes and thus generated a lot of heat.
They consumed a great deal of electricity and were expensive to
operate.
The machines required constant maintenance.
4. Continue ………….
These computers were huge in size and required a large room for
installation.
Examples UNIVersal Automatic Computer (UNIVAC), &
Electronic Numerical Integrator And Calculator (ENIAC),
5. Second Generation (1956 to 1963): Using
Transistors
In hardware Technology Transistors replaced the vacuum tubes of the
first generation of computers.
Transistors are smaller in size compared to vacuum tubes, thus, the size
of the computer was also reduced.
Transistors allowed computers to become smaller, faster, cheaper,
energy efficient and reliable.
The second generation computers used magnetic core technology for
memory. They used magnetic tapes and magnetic disks for secondary
storage.
The input was still through punched cards and the output using
printouts.
6. Continue………..
Second generation computers generated a lot of heat but much less
than the first generation computers.
They required less maintenance than the first generation
computers.
Examples PDP-8, IBM 1401 and CDC 1604.
7. Third Generation (1964 to 1971): Using Integrated
Circuits
The third generation computers used the Integrated Circuit (IC).
In an IC chip, multiple transistors are placed on a silicon chip.
The use of IC chip increased the speed and the efficiency of
computer
The keyboard and monitor were used to interact with the third
generation computer, instead of the punched card and printouts.
The third generation computers used less power and generated less
heat than the second generation computers.
8. Continue………..
The maintenance cost of the computers was also less compared to
second generations.
The size of these computers was quite small compared to the
second generation computers.
Examples IBM 370, PDP 11.
9. Fourth Generation (1971 to present): Using
Microprocessors
Hardware Technology uses the Large Scale Integration (LSI) and the Very
Large Scale Integration (VLSI) technology.
Thousands of transistors are integrated on a small silicon chip using LSI
technology.
VLSI allows hundreds of thousands of components to be integrated in a
small chip.
This period is marked by the development of microprocessor.
Microprocessor is a chip containing millions of transistors and
components, and, designed using LSI and VLSI technology.
The fourth generation computers are also portable and more reliable.
10. Continue………..
They generate much lesser heat and require less maintenance compared
to their previous generations.
This generation of computers gave rise to Personal Computer (PC).
The linking of computers is another key development of this period.
The computers were linked to form networks that led to the
appearance of the Internet.
This generation also saw the development of pointing devices like
mouse, and handheld devices.
11. Continue………..
Several new operating systems like the MS-DOS and MS-Windows
developed during this time.
This generation of computers supported Graphical User Interface (GUI).
GUI is a user-friendly interface that allows user to interact with the
computer via menus and icons.
Computers became widely available for commercial purposes. Personal
computers became available to the home user.
Examples The Intel 4004 chip was the first microprocessor.
In 1981, IBM introduced the first computer for home use.
In 1984, Apple introduced the Macintosh.
13. Fifth Generation (Present and Next): Using Artificial
Intelligence
The fifth generation computers are based on Artificial Intelligence
(AI). They try to simulate the human way of thinking and reasoning .
The fifth generation computers use Super Large Scale Integrated
(SLSI) chips that are able to store millions of components on a single
chip.
Artificial Intelligence includes areas like
Expert System (ES),
Natural Language
Neural Networks
Robotics, etc.
14. Key words:
Vacuum tube: A vacuum tube (also called a valve) is a
device used to amplify electronic signals or control
electric current.
Punch card: A card with holes that have been punched in
different positions to represent information.
Or A piece of paper which store information in earlier
days.
Magnetic drum: It is a metal cylinder coated with
magnetic iron-oxide material on which data and programs
can be stored.