There are some devices in a computer system which are used to give out the result of data processing. A popular output device about which you would be well aware of resembles a TV screen. In case, the output is to be displayed on a big screen for showing it to numerous people, an LCD projector is used. Other than these devices, we can also use printers (impact and non-impact) to produce the output on paper.

Based on the above case, answer the following questions:

(a) Which of the following devices resemble a TV screen?

1. Touch sensor
2. VDU
3. MCB
4. All of the above

(b) Which device produces result on paper with hammering effect?

1. LCD projector
2. Laser printer
3. Dot Matrix printer
4. Inkjet printer

(c) Which of the following devices produce result without making any sound?

1. Impact printer
2. Character printer
3. Dot Matrix printer
4. Laser printer

(d) Which of the following devices is used to display presentation in a hall or a gallery?

1. Digital camera
2. Laptop screen
3. LCD projector
4. Seven segment display

(a) VDU

(b) Dot Matrix printer

(c) Laser printer

(d) LCD projector