– Dhan
Bahadur Thapa
-
- Computer is a very essential part of 21st century. Due to it’s important and very useful features it has becomes very popular now a days. There are many advantages and important features of the computer.
But Computer
is not the only complete system. It can work after getting command form the
user. Its feature include: - mechanical systems, electrical systems, electronic
system, etc. Computer system has many
advantages. For example, it has very
fact calculation speed, 100% accurate, multiple forms of input and output
devices, huge storage, easy to control, small and light, cheep etc. at first,
user gives command to system by using input device. System converts the command
into machine language and processes it.
After
processing the data, the computer can generate output signal. It displays the
result by using output device like monitor, speaker etc. Computer can use
electronic circuits to output digital signals, which can control various output
devices, for examples, printer, monitor, relay, motor etc. Hardware, software
and user should be connect together to run the computer. Some of the feature of
computer system is given below-
-Computer is a fastest electronic machine that can
perform mathematical calculation at very high speed. The CPU of modern
computers can do a large number of calculations within one second. It also can
manage and perform a lot of work and data in a short time with 100% accurate. .
It can perform 5000 addition and 300 multiplications in a second. The fast calculation speeds of computer make
it possible to control very much facility at the same time under different
conditions. Which makes our dally work very easily. For example, the MTR computer system can
control trains in different routes to ensure the system runs normally. So it
can perform difficult work very easily at a very few time without any mistake.
-Computer has multi function system. It has many input
devices such as mouse, keyboard, scanner, speaker etc. It performs different
kinds of action. It can also use electronic circuits to transform signals from
electronic sensors to digital data and input them to the computer. By using
modem, analog signal of telephone line can transform into digital signal and
digital to analog. Also By using a sensor, the temperature can be transformed
into digital data and input in the computer.
-In early days, Computer was very much
big but now days their size is decreasing day by day. by the development of
technology, the size and weight of computers have been reduced a lot. The microcomputers developed recently are so
complicated that it is achievable to put the microcomputers into a number of
utensils, such as washing machines, air-conditioners etc. Now days, Computer
Manufacture Company is developing more and more advantage computer because of
their computation. It helps to develop more advantage computer with small size
and lower cost. Some of example is; laptop, palmtop, tablet pc etc.
-Computer is the vast data-storing device. Computer use a
large number of information storage devices, such as magnetic tape, hard disk,
external hard disk, CD-ROM, Pen drive, Micro memory cards, DVD etc and many more. Therefore, It stores large amount of data,
information, record and many more with safety and permanently. Computer use
those stored information to perform the controlling work. For example, we can use computer to design
complicated shape of work pieces, then we input the closely connected data into
the storage device of the CNC machine and let the computer to control the
cutting work of the work pieces according to the data.
.
Now computer provides very large amount of data like super computer. It can
store data at very high speed.
5. Automatic:
6. Requirement of huge quantity of supporting device
-Computers can manage large
amount of data in a short time, but it needs some supporting devices to provide
information. Because a computer control
system needs many supporting devices.
For example, a system is required to discover the position of the tools
and work pieces when a computer is used to control a harsh machine. The system can give feedback to the computer
to agree to it to control the machine accordingly.
-A
program is a set of commands. Computer
can work according to the program. Thus, operators can either input new program
or modify the accessible program to change the working events or methods
according to the requirements. As a
result, computer control system not only can work that simple task and recurring
work, it can also manage complicated work under different situation and
feedback according to the program. For
example, there is a visual system in the computer prohibited six legs machine. The
computer of the robot can examine the image and choose the way without any problem.
8. Telecommunications achievable
-Computers
be capable of be used to input or output digital signals, and using the wires
to send out signals, replace information and communicate. Hence, computer information can be
transmitted to far-away areas by private cables, optical fiber cable, telephone
lines, wifi signal internet or radio wave.
For example, we use video call through internet in computers. Also, it
can control far-away video cameras or machines through the internet; computers
can also be used to control spacecrafts in space via radio wave.
9. Diligent:
It is a
diligent machine that can perform operation repeatedly repeated without feeling
bored and tired. It can work continuous until user can give command to it. It completes
all the work completely without any mistake.
10. Difficulties in repairs
-Nowadays, computers are used in mass production of IC
and electronic circuit board .They need new parts to replace those
damaged. With the rapid development of
computer technology, the newly designed parts may not be used in those
traditional electronic circuit boards, and so the maintenance will be more
difficult. For example, when newly
designed random access memory (RAM) is produced, the production of the old
designed RAM will finish. After some
time, when the old designed RAM is damaged, it cannot be replaced.
11. Electronic:
Computer
cannot do anything without electricity. All the parts of computer are
electronic such as mouse, keyboard, hard disk, CD-ROM, etc. its main resource
of power is electronic. It gets power from electricity and run itself and does its
work. Hence, it is known as electronic device.
-Computer is a 100% accurate machine. It never does any
mistake if user gives the correct input in the right time. It is also very good
feather of computer so people trust it and use it for their daily life. Due to
this feature, it is widely used.
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