1. Answer the following
questions:
a. Define the computer.
A computer is an electronic machine that processes data and performs tasks
according to a set of instructions or programs. It can store, retrieve, and
process information quickly and accurately.
b. Write about the abacus.
The abacus is one of the earliest known calculating devices, invented around
2400 BC. It consists of a wooden frame with rods and beads. It was used for
basic arithmetic operations like addition and subtraction.
c. Explain the working
principle of the computer.
A computer works on the principle of Input → Process → Output.
First, the user provides data and
instructions (input). Then, the computer processes the data according to the
instructions (processing). Finally, it delivers the result (output). It also
stores the data for future use (storage).
d. List out the various
features of the computer system.
- High speed
- Accuracy
- Automation
- Storage capacity
- Diligence
- Versatility
- Multitasking
e. Why is the computer known as
the diligent machine? Explain.
The computer is known as a diligent machine because it can perform tasks
repeatedly without losing efficiency or accuracy. Unlike humans, it does not
get tired, bored, or distracted.
f. Explain the computer as a
versatile machine.
A computer is called a versatile machine because it can perform a wide variety
of tasks such as word processing, gaming, data analysis, internet browsing, and
more. It is used in almost every field of modern life.
g. What are the application
areas of the computer? List out.
- Education
- Business
- Banking
- Medicine
- Science and Technology
- Communication
- Entertainment
- Government offices
h. Explain how computers are
useful in the business sector.
In business, computers are used for maintaining records, managing accounts,
communicating through emails, preparing presentations, analyzing sales data,
and automating office tasks. They improve efficiency and reduce manual work.
i. Write the use of computers
in the science and technology sectors.
In science and technology, computers are used for complex calculations,
simulations, data analysis, controlling experiments, and research. They help in
innovation, invention, and making scientific discoveries faster and more
accurate.
2. Write the true or false.
a. Computers are not electronic
machines. — False
b. Computers can store large volumes of data for long periods. — True
c. You cannot use the computer for long periods. — False
d. The computer is not a 100% accurate machine. — True (It depends on
user input)
e. Computers are useful in various sectors. — True
f. Banks utilize the computer for performing various operations. — True
g. The only field where the computer is not useful is agriculture. — False
3. Fill in the blanks:
a. A computer is an electronic
machine.
b. The word computer is derived from the Latin word computare.
c. The history of computers begins with an ancient device abacus.
d. The computer performs tasks automatically after getting instructions.
e. The various operations of computers are input, process, output, and storage.
f. The errors of the computer due to wrong instruction are known as bugs.
4. Write the technical term for
the following:
a. Physical components of the
computer system. — Hardware
b. Non-physical components of the computer system. — Software
c. Gives data and instructions to the computer system. — Input device
d. Generates output from the computer system. — Output device
e. Errors due to the wrong input of the users. — GIGO
f. Ability of the computer to perform tasks for long periods. — Diligence
g. Ability of the computer to work in many areas. — Versatility
