Generations Of Computers
What generation a computer belongs to is determined by the technology it uses. Table 1.1 shows the technology used in the different generations of computers. With advancement in the generation, the performance of computers improved not only due to the implementation of better hardware technology but also superior operating systems and other software utilities.
Table 1.1
Generation Number | Technology | Operating System | Year Of Introduction | Specific Computers |
1 | Vaccum Tube | None | 1945 | Mark 1 |
2 | Transistor | None | 1956 | IBM 1401, ICL 1901, B5000, MINSK-2 |
3 | SSI and MSI | Yes | 1964 | IBM S/360/370, UNIVAC 1100, HP 9810 |
4 | LSI and VLSI | Yes | 1971 | ICL 2900, HP 9845A, VAX 11/780, ALTAIR 8800, IBM PC |
5 | HAL | Yes | Present and beyond | - |
Frequently Asked Questions
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Ans: The concept of calculating machines evolved long before
the invention of electrical and electronic devices , mechanical and mechanical devices.
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Ans: The definition clearly categorizes a computer as an electronic apparatus. view more..
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Ans: A computer is a data processor. It can accept input, which may be either data or instructions or both. The computer remembers the input by storing it in memory cells. It then processes the stored input by performing calculations or by making logical comparisons or both. view more..
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Ans: With advancement in the generation, the performance of computers improved .
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Ans: Computers can be classified in variety
of ways on the basis of various parameters .
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Ans: A computer can accept input, process or store data, and
produce output according to a set of instructions which
are fed into it.
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Ans: There are different types of memories with particular functions. view more..
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Ans: An operating system may be defined as a system software
which acts as an intermediary between the user and the
hardware.
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Ans: The processing required for a
single instruction is called an instruction cycle. view more..
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Ans: A number system defines a set of values used to represent
quantity.
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Ans: The base, or radix, of any number system is determined by
the number of digit symbols in the system.
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Ans: Basic Internet Terminology, Types Of Internet Connections, Uses And Hazards Of Internet view more..
+
Ans: A computer is 'an automatic electronic apparatus for making calculations or controlling operations that are expressible in numerical or logical terms'. view more..
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Ans: Most designs of computers today are based on concepts developed
by John von Neumann and are referred to as the von
Neumann architecture. Computers can be classified in variety
of ways on the basis of various parameters such as usage,
cost, size, processing power, and so on. The classification of
computers is presented below based on their power and their
use. view more..
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Ans: Supercomputer is the most expensive and fastest type of
computer that performs at or near the currently highest
operational rate for computers. A Cray supercomputer is
a typical example. These are employed for specialized
applications that require immense amounts of mathematical
calculations such as weather forecasting, nuclear energy
research, and petroleum exploration etc. view more..
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Ans: A mainframe computer supports a vast number of users to
work simultaneously and remotely. Apart from providing
multi-user facility, it can process large amounts of data at very
high speeds and support many input, output and auxiliary
storage devices. These computers are very large in size, and
expensive. The main difference between a supercomputer
and a mainframe is that a supercomputer can execute a single
program faster than a mainframe, whereas a mainframe uses
its power to execute many programs concurrently. view more..
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Ans: A number system defines a set of values used to represent
quantity. For example, the number of mobile phones kept in
a shop, the number of persons standing in a queue, and the
number of students attending a class. view more..
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Ans: The base, or radix, of any number system is determined by
the number of digit symbols in the system. For example,
binary is a base-2 number system since it uses two symbols
and decimal is a base-10 system since it uses ten symbols.
view more..
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