Evolution of Computer ( chapter 1) Class 5th

Chapter 1^st Evolution of Computer ( Rishi Sir)

A.    Tick the correct answers

1.     Who invented net napier’s bones?

Ans- John Napier.

2.     This generation of computers used transistors as circuitry.

Ans- Second Generation.

3.     Which one of the following is not an example of mainframe computer?

Ans- CRAY-1.

4.     Which of the following computer generation use modern-day computer?

Ans- Fifth Generation.

5.     Micro computers are also known as

Ans- Personal Computers.

B.    Fill in the blanks.

1.     Abacus look like a rectangular box with beads.

2.     Pascaline was the first mechanical calculator.

3.     The fifth generation of computers is based on artificial intelligence.

4.     Micro computers are used at home ,office and school.

5.     IBM 360 is a third generation of computer.

C.    Write true and false.

1.     Charles Babbage invented abacus in the year 1837 – false

2.     Third generation computers use purchase card and secondary memory false.

3.     Mini computers are costlier than mainframe computer – False

4.     Mainframe computers are used in bank and stock exchange market. True

5.     AI stand for artificial invention -false

D.    Answer the following questions

1.     What do you understand by and abacus? What do you think it is an important calculating device?

Ans- abacus is considered as the first calculating device believe in have been invented in China. It was used to perform simple mathematical operation such as addition subtraction multiplication and division.

2.     Write any three feature of first generation computers.

Ans- three features of first generation computers are.

A.    Balky

B.    Expensive

C.    Small internal storage.

3.     Differentiate between the micro computer and mini computer.

Ans- micro computers are designed for personal used and mini computers are designed for office bank and railway etc use

Micro computer is small in size yet powerful and mini computer big in size and more storage capacity.

4.     Write a short note of fifth generation computers.

Ans- fifth generation computer use artificial intelligence II. It has very large storage capacity. It has high processing speed etc

5.     List the characteristics that make supercomputers the most powerful type of computers.

Ans- super computers are the most powerful computers these computers can tackle thousand of instruction per second.