Lesson - 1 Introduction to Computer

 

4. Write suitable technical term (Single word) for the following.

a) The result obtained after processing input data.
    Ans: information
b) The features of computer which tells that it produces correct result.
    Ans: Accuracy
c) The wrong output due to user's mistake.
    Ans: Garbage in garbage out (GIGO)
d) The computer part which does processing.
    Ans: CPU (Central Processing Unit)

5. Answer the following questions.

a. Write suitable definition of computer.

Ans: A computer is an electronic device which accepts given data and instructions from the user, processes them into useful information and provides desired result.

b. What is the basic working principle of every computer?

Ans: The basic working principle of every computer is based on Input-Processing-Output (IPO) cycle.

c. Why is computer called a versatile machine?

Ans: A computer is called a versatile machine because it can perform several tasks at different places such as education, communication, business etc.

d. List any four features of computer.

Ans: Features of computer are:
    1. Speed

    2. Accuracy

    3. Diligence

    4. Versatility
    5. Storage

e. Represent measuring unit of computer.

6. Write one/one uses of computer in the given fields.

a. Education: Used to teaching and learning process.

b. Communication: Used to send text, picture, audio, video messages.

c. Medical: Used to diagnose and cure patients such as eye-testing etc.

7. Write full forms of the following.

    CPU =   Central processing unit 

    DVD = Digital Versatile Disc or Digital Video Disc

    ICU =  Intensive care unit

    IPO = Input Processing Output

    GHz = Giga Hertz