Every computer carries out the following five stages, when viewed from a broad sense.
STAGE 1 − Takes data as input.
STAGE 2 − Stores the data/instructions in its memory and uses them as required.
STAGE 3 − Processes the data and converts it into useful .
STAGE 4 − Generates the output.
STAGE 5 − Controls all the above four steps.
STAGE
Following are few merits of computers.
High Speed
Computer is a very fast device. It is capable of performing calculation of very large amount of data. The computer has units of speed in microsecond, nanosecond, and even the picosecond.
It can perform millions of calculations in a few seconds as compared to man who will spend many months to perform the same task.
Accuracy
The calculations are almost 100% error free.
Computers perform all jobs with almost 100% accuracy provided that the input is correct.
Storage Capabilities
A computer has much more storage capacity than human beings. It can store large amount of data.
It can store any type of data such as images, videos, text, audio, etc.
Diligence
Unlike human beings, a computer is free from monotony, tiredness, and lack of concentration.
It can work continuously without any error and boredom.
It can perform repeated tasks with the same speed and accuracy.
Versatility
A computer is a very versatile machine.
A computer is very flexible in performing the jobs to be done.
This machine can be used to solve the problems related to various fields.
At one instance, it may be solving a complex scientific problem and the very next moment it may be playing a card game.
Reliability
A computer is a reliable machine.
Modern electronic components have long lives.
Computers are designed to make maintenance easy.
Automation
Computer is an automatic machine.
Automation is the ability to perform a given task automatically. Once the computer receives a program i.e., the program is stored in the computer memory, then the program and instruction can control the program execution without human interaction.
Reduction in Paper Work and Cost
The use of computers for data processing in an organization leads to reduction in paper work and results in speeding up the process.
As data in electronic files can be retrieved as and when required, the problem of maintenance of large number of paper files gets reduced.
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