Which of the following statements are correct?

1.Instructions and memory addresses are represented by binary codes

2.The size of computers was very large in the first generation due to vacuum tubes and punch cards

3.Microprocessors as switching devices belong to the fourth generation of computers

4.Integrated chips were used in third-generation computers

A2, 3 and 4

B3 and 4

C1, 2 and 3

D1, 2, 3 and 4 ✓ Correct

Correct answer: (D) 1, 2, 3 and 4

Explanation

All four statements are correct.

Statement 1 rightly says instructions and memory addresses are represented by binary codes.

Statement 2 correctly links the large size of first-generation computers to vacuum tubes and punch cards.

Statement 3 rightly places microprocessors as switching devices in the fourth generation.

Statement 4 correctly places integrated chips in third-generation computers.

Each generation shrank in size as its switching technology improved.

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