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CLASSIFICATION OF COMPUTERS
ON THE BASIS OF WORKING
By
Mr. V. VEERANAN
M.Sc. Computer Science., Dip. in Yoga.,
Government Arts College, Melur – 625 106.
1.1.8 Types of computer
1.1.8.1 Classification of Computers
on the basis of working
Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga
Analog computers
Analog computers are used to process analog data. Analog data
is of continuous nature and which is not discrete or separate. Such type
of data includes temperature. pressure, speed weight, voltage, depth etc.
These quantities are continuous and having an infinite variety of values.
It measures continuous changes in some physical quantity
e.g. The Speedometer of a car measures speed, the change of
temperature is measured by a Thermometer, the weight is measured by
Weights machine. These computers are ideal in situations where data
can be accepted directly from measuring instrument without having to
convert it into numbers or codes.
Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga
Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga
Analog computers
Analog computers are the first computers being developed and
provided the basis for the development of the modern digital computers.
Analog computers are widely used for certain specialized engineering
and scientific applications, for calculation and measurement of analog
quantities. They are frequently used to control process such as those
found in oil refinery where flow and temperature measurements are
important. They are used for example in paper making and in the
chemical industry. Analog computers do not require any storage
capability because they measure and compare quantities in a single
operation. Output froth an analog computer is generally in the form of
readings on a series of the dial (Speedometer of a car) or a graph on strip
chart.
Analog computers
Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga
Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga
Digital Computers
A Digital Computer, as its name implies, works with digits to represent
numerals, letters or other special symbols. Digital Computers operate on inputs
which are ON-OFF type and its output is also in the form of ON-OFF signal.
Normally, an ON is represented by a 1 and an OFF is represented by a 0. So we
can say that digital computers process information which is based on the presence
or absence of an electrical charge or we prefer to say a
binary 1 or 0.
A digital computer can be used to process numeric as well as non-numeric data. It
can perform arithmetic operations like addition, subtraction, multiplication and
division and also logical operations. Most of the computers available today are
digital computers. The most common examples of digital computers are accounting
machines and calculators.
Digital Computers
Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga
Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga
Hybrid Computers
A hybrid is a combination of digital and analog computers. It
combines the best features of both types of computers, i.e. It has the
speed of analog computer and the memory and accuracy of digital
computer. Hybrid computers are used mainly in specialized applications
where both kinds of data need to be processed. Therefore. they help the
user, to process both continuous and discrete data. For example a petrol
pump contains a processor that converts fuel flow measurements into
quantity and price values.
In hospital Intensive Care Unit (ICU), an analog device is used
which measures patient‘s blood pressure and temperature etc. which are
then converted and displayed in the form of digits. Hybrid computers for
example are used for scientific calculations, in defense and radar
systems.
Hybrid Computers
Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga
Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga

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1.1.8 Types of computer & 1.1.8.1 Classification of Computers on the basis of working

  • 1. CLASSIFICATION OF COMPUTERS ON THE BASIS OF WORKING By Mr. V. VEERANAN M.Sc. Computer Science., Dip. in Yoga., Government Arts College, Melur – 625 106.
  • 2. 1.1.8 Types of computer 1.1.8.1 Classification of Computers on the basis of working Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga
  • 3. Analog computers Analog computers are used to process analog data. Analog data is of continuous nature and which is not discrete or separate. Such type of data includes temperature. pressure, speed weight, voltage, depth etc. These quantities are continuous and having an infinite variety of values. It measures continuous changes in some physical quantity e.g. The Speedometer of a car measures speed, the change of temperature is measured by a Thermometer, the weight is measured by Weights machine. These computers are ideal in situations where data can be accepted directly from measuring instrument without having to convert it into numbers or codes. Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga
  • 4. Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga Analog computers Analog computers are the first computers being developed and provided the basis for the development of the modern digital computers. Analog computers are widely used for certain specialized engineering and scientific applications, for calculation and measurement of analog quantities. They are frequently used to control process such as those found in oil refinery where flow and temperature measurements are important. They are used for example in paper making and in the chemical industry. Analog computers do not require any storage capability because they measure and compare quantities in a single operation. Output froth an analog computer is generally in the form of readings on a series of the dial (Speedometer of a car) or a graph on strip chart.
  • 5. Analog computers Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga
  • 6. Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga Digital Computers A Digital Computer, as its name implies, works with digits to represent numerals, letters or other special symbols. Digital Computers operate on inputs which are ON-OFF type and its output is also in the form of ON-OFF signal. Normally, an ON is represented by a 1 and an OFF is represented by a 0. So we can say that digital computers process information which is based on the presence or absence of an electrical charge or we prefer to say a binary 1 or 0. A digital computer can be used to process numeric as well as non-numeric data. It can perform arithmetic operations like addition, subtraction, multiplication and division and also logical operations. Most of the computers available today are digital computers. The most common examples of digital computers are accounting machines and calculators.
  • 7. Digital Computers Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga
  • 8. Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga Hybrid Computers A hybrid is a combination of digital and analog computers. It combines the best features of both types of computers, i.e. It has the speed of analog computer and the memory and accuracy of digital computer. Hybrid computers are used mainly in specialized applications where both kinds of data need to be processed. Therefore. they help the user, to process both continuous and discrete data. For example a petrol pump contains a processor that converts fuel flow measurements into quantity and price values. In hospital Intensive Care Unit (ICU), an analog device is used which measures patient‘s blood pressure and temperature etc. which are then converted and displayed in the form of digits. Hybrid computers for example are used for scientific calculations, in defense and radar systems.
  • 9. Hybrid Computers Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga
  • 10. Mr. V.Veeranan, M.Sc. Computer Science, Dip. in Yoga