2nd Class Computers Science Getting Started with Computer Computer Basics

       Computer Basics

Computer is the most wonderful machine that has redefined the way of our living. It has not only helped in overcoming the geographical barrier but also made our work easier and faster.  

      The following are the features of a computer:

• It is a wonderful electronic machine.
• It works very fast, never makes mistakes, never gets tired and can remember and store a lot of information.
• It works on the principle of taking input (data entered in the computer), processing it using some programs and then delivering the output (the result produced based on the user input). It means first some data is entered in the computer. Then this data is processed with the help of some programs and finally output is delivered. Output here refers to result.
• It makes our work easier and helps us to do many things such as calculations, writing letters, playing games, watching movies, listening to music, drawing, sending messages and even shopping by using the Internet.
• It cannot think on its own or make decisions. It only follows the instructions given to it.   

 Given below the statements about computer. Which statement is correct about it?

Statement A: Computer can store information.

Statement B: Computer is similar to typewriter.    

(A) Statement A is correct

(B) Statement B is correct

(C) Both statement A and Bare correct

(D) Both statement A and B are incorrect  

Answer: (A) Explanation Correct Option: (A) Computer can store information but it is different from typewriter Therefore, option (A) is correct.                                  

Incorrect Options:

(B) Option (B) is incorrect.

(C) Option (C) is incorrect.

(D) Option (D) is incorrect.    

 Computer is a wonderful machine, but it is different from humans. Which one of the following options is correct for this difference?    

(A) Computer can work faster                   

(B) Computer can store information            

(C) Computer cannot think                         

(D) All of these                                 

Answer: (c) 

Explanation         

Correct Option:

(C) Computer can not think but humans can think. Therefore, option (C) is correct.

Incorrect Options:

(A) Option (A) is incorrect.

(B) Option (B) is incorrect.

(D) Option (D) is incorrect.