Delhi Police Constable Exam Model Paper 7

Monitor is the output device that helps to display soft copy.

• A non printed copy of a document is known as soft copy.
• The monitor is the primary output device on a computer
• Cathode ray technology was used in older monitors
• Modern monitors are typically a thin film transistor liquid crystal display (TFT-LCD).
• Black and white monitor is known as a monochromatic monitor.

The printed copy of a document is known as a hard copy.

The printer is the output device that helps to display hard copy on a paper.

The scanner is a device that optically scans images, printed text, and converts it to a digital image.

The keyboard is the primary input device.