Which of the following statements is false?

1. secondary storage is non-volatile
2. primary storage is volatile
3. when the computer is turned off, data and instructions stored in primary storage are erased
4. None of the above

What does OCR stand for?

1. Optical Character Reader
2. Optical Character Recognition
3. Operational Character Reader
4. Only Character Reader

The secondary storage devices can only store data but they cannot perform …………….. .

1. Arithmetic operations
2. Logic operations
3. Fetch operations
4. Either of the above

Which of the following does not represent an I/O device?

1. Speaker which beeps
2. Plotter
3. Joystick
4. ALU