Main memory is …………… in nature.

1. Non-volatile
2. Volatile
3. Both 1 and 2
4. None of these

MICR stands for …………… .

1. Magnetic Ink Character Reader
2. Magnetic Inch Character Reader
3. Magnetic Ink Code Reader
4. None of these

The first scanner was the …………… scanner introduced in 1957.

…………… printers produce images by spraying tiny droplets of ink onto the paper.