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4. Which of the following is the first electro-mechanical computer?

a. Mark-I b. ENIAC

c. Difference Engine d. Pascaline

5. Which of the following can process millions of instructions in seconds?

a. Pebbles b. Computer

c. Tabulating machine d. Abacus

Fill in the blanks with the correct words.

Hints ENIAC, John Mauchly, IBM, Charles Babbage, Lady Ada Lovelace

1. is known as the ‘Father of computer’.

2. is the first programmer in computer history.

3. UNIVAC was invented by and Presper Eckert.
4. introduced the PC-XT.

5. consumed almost 200 kW of power.

Tick ( ) the correct statements and cross ( ) the wrong ones.

1. A computer is not gifted with intelligence as human beings are.

2. Abacus is used to calculate numbers at low speed.

3. VLSI stands for very low scale integration.

4. GUI operating system was introduced in the fourth generation.

Q Answer the following questions:
A
1. How did people calculate or count in the olden times?

2. Who invented the analytical engine?

3. Write any one limitation of the computer.

4. Differentiate between first and second generation computers.

Computer Timeline 29