An electronic device capable of receiving and processing information according to programmed instructions to produce output. Computers are widely used across many domains including government, banking, healthcare, engineering, defense, education, and business for tasks like processing transactions, running simulations, storing records, analyzing data, and automating processes. They have revolutionized and increased the speed, accuracy, and efficiency of operations in these fields.

1. An electronic device which is
capable of receiving information
in a particular form and of
performing a sequence of
operations in accordance with a
predetermined but variable set
of procedural instruction to
produce a result in the form of
information or signals.

3. You can understand and analyze
the importance of computer by
seeing a revolution in offline and
online business, online
education, online
communication, military use
internet banking. To store,
access, manipulate, calculate,
analyze data and information we
use hardware devices and
software application.

4. The government works or official works
take more time to complete in the past.
There was lots of staff required in the
past to manage citizen’s works. But today
citizens, consumers are getting a solution
with high speed and accuracy. Because of
the uses of computer in official works.
There are so many applications that
speed the process and quality of official
works. Such as Microsoft Office package,
email, video conferencing tools etc. are
few applications that speed the work of
government offices with accuracy.

5. Banks are using computers daily to
faster and accurate the customer
demands. Banks are using a
computer to deposit customer money
in their account. In this case, cashier
enters the account number of
customer in their banking
application, they first confirm the
account number and customer
details and then enter the deposited
amount in their banking application
by the use of the keyboard.

6. Uses of the computer in hospital provide
many benefits for doctors and patient.
Hospitals can create a database of a
patient with their treatment records,
medicine records. Doctors are using a
computer to diagnose the diseases of
patients faster. They are taking help of
various medical applications of computer
and hardware devices. The use of
computer and its application in hospitals
are such as to do the research on
diseases, blood test, and urine test, brain
testing, and body scanning etc.

7. Computers are widely used for Engineering
purpose.
One of the major areas is CAD (Computer Aided
Design).that provides creation and modification
of images. Some of the field are mentioned
below:
•Structural Engineering − Requires stress
and strain analysis for design of ships,
buildings, budgets, airplanes, etc.
•Industrial Engineering − Computers deal
with design, implementation, and improvement
of integrated systems of people, materials, and
equipment.
•Architectural Engineering − Computers
help in planning towns, designing buildings,
determining a range of buildings on a site using
both 2D and 3D drawings.

8. Computers are largely used in
defense. Modern tanks, missiles,
weapons, etc. Military also employs
computerized control systems. Some
military areas where a computer has
been used are −
•Missile Control
•Military Communication
•Military Operation and Planning
•Smart Weapons

9. The computer helps in providing a lot of facilities
in the education system.
•The computer provides a tool in the education
system known as CBE (Computer Based
Education).
•CBE involves control, delivery, and evaluation of
learning.
•Computer education is rapidly increasing the
graph of number of computer students.
•There are a number of methods in which
educational institutions can use a computer to
educate the students.
•It is used to prepare a database about
performance of a student and analysis is carried
out on this basis.

10. A computer has high speed of calculation,
diligence, accuracy, reliability, or
versatility which has made it an
integrated part in all business
organizations.
Computer is used in business
organizations for −
•Payroll calculations
•Budgeting
•Sales analysis
•Financial forecasting
•Managing employee database
•Maintenance of stocks, etc.