Output Device

OUTPUT DEVICES

1. Monitor (VDU) Visual Display Unit: Monitor is a standard output device that is used to provide output visually.

MONITOR - TYPES

1. CRT Cathode Ray Tube): These types of monitor contain large size and consume more electricity.

CRT MONITOR

2. TFT/LCD (Thin Film Transistor/Liquid Crystal Display): These types of monitor contain small size and less electricity but its contrast ratio is lower than comparison of CRT.

TFT/LCD MONITOR

3. Printer: Printers are used to provide output in written or draw material on papers as hard copy of any document


TYPES OF PRINTER

1.  Impact printer

2.  Non impact printer

IMPACT PRINTER FEATURES

a. Inexpensive (Cheap)

b. Use ink Ribbon and Hammer

c. Noisy

d. Not suitable for graphics

e. Slow

f. Inferior printing quality

IMPACT PRINTER - EXAMPLES

Dot matrix, Line printer, Drum printer, Chain printer, etc.

IMPACT PRINTER

NON IMPACT PRINTER FEATURES

1.  Expensive

2.  use ink cartage.

3.  Less noisy, non noisy devices

4.  Fast

5.  Suitable for high quality graphics.

NON IMPACT PRINTER - EXAMPLES

1.  Ink jet printer

2.  Laser printer

3.  Plotter

Non Impact Printer

PRACTICE QUESTIONS

1. Find out the odd term

a) Dot matrix

b) Ink jet

c) Line printer

d) Daisy wheel

Ans. b

Explanation: ink jet is an example of non-impact printer and other are examples of impact printer.

2. Identify the pointing device

a) Mouse

b) Light pen

c) Track ball

d) Joystick

e) All of the above  

Ans. e

Explanation:

4.  LCD stands for

a) Liquid crystal display

b) Liquid crystal desktop

c) Liquid computer display

d) None of the above

Ans. a

Explanation:

5.  Which device is used to read bar code

a) MICR

b) OMR

c) BCR

d) OCR

Ans. c

Explanation:

6.  Which device is used to read multiple choice question paper?

a. MICR

b. OMR

c. BCR

d. OCR

Ans. b
Explanation:

HOME