Question

Q1. Write down the differences between the following: (i) Input and Output devices (ii) Softcopy Output and Hardcopy Output Q2. Define Monitor and its types. Q3. What are the characteristics of a best quality Monitor.

Answer 1

Ans1. (i)Input devices-
1. It sends information to a computer system for processing.
2. Input devices only allow for input of data to a computer.
3. For example: Keyboard,Mouse,JoyStick,Light pen,Track Ball,Scanner,Microphone, etc.

Output devices-
1. It reproduces or displays the results of that processing.
2. Output devices only receive the output of data from another device.
3. For example: Monitor,Printer,Headphones,Computer Speakers,Projector,GPS,Sound Card, etc.

(ii) Hardcopy Output-
1. It is a printed document file.
2.It is a physical copy.
3.It is treated as permanent copy.

Softcopy Output-
1. It is a non- printed document file.
2. It is a virtual copy.
3. It is treated as temporary copy.


Ans2. A computer monitor is an output device that displays information in pictorial form. A monitor usually comprises the visual display, circuitry, casing, and power supply. ... Older monitors used a cathode ray tube (CRT).


Ans3. Following are the characteristics of a monitor:
The most important aspect of a monitor is its size.
The resolution of a monitor indicates how density the pixels are packed.
The amount of data that can be transmitted in a fixed amount of time.
d) Refresh Rate:
Display monitors must be refresh many times per second.