types of computer

NATIONAL UNIVERSITY OF MODERN
LANGUAGE,H_9 ISLAMABAD

Sub: Introduction to computer
Assignment # 1

TO: M . Aasma

From :Muhammad Shahzad Iqbal

Types of computer

analog: Analog Computer is a computing device that works on continuous range of
values. The results given by the analog computers will only be approximate since they deal with
quantities that vary continuously. It generally deals with physical variables such as voltage,
pressure, temperature, speed, etc.

Digital:
The digital computer is designed using digital circuits in which there are two levels for an input

or output signal These two levels are known as logic 0 and logic 1. Digital Computers can give

more accurate and faster results.

Hybrid: A hybrid computer combines the desirable features of analog and digital
computers. It is mostly used for automatic operations of complicated physical processes
and machines. Now-a-days analog-to-digital and digital-to-analog converters are used for
transforming the data into suitable form for either type of computation . Hybrid computers are
mainly used for specialized tasks.

Super computer: When we talk about types of computers, the first type that comes to
our mind would be Super computers. They are the best in terms of processing capacity and also the most
expensive ones. These computers can process billions of instructions per second. Normally, they will be
used for applications which require intensive numerical computations such as stock analysis, weather
forecasting etc.

MAINFRAME COMPUTER: Mainframe computers can also process data at very
high speeds vi.e., hundreds of million instructions per second and they are also quite expensive. Normally,
they are used in banking, airlines and railways etc for their applications.

MINI COMPUTER: Mini computers are lower to mainframe computers in terms of speed
and storage capacity. They are also less expensive than mainframe computers. Some of the features of
mainframes will not be available in mini computers. Hence, their performance also will be less than that of
mainframes.

MICRO COMPUTER: The invention of microprocessor (single chip CPU) gave birth to the
much cheaper micro computers.

They are further classified into different types,

DESKTOP COMPUTER:

laptop computer:

handheld computer:

types of computer

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