Page 26 - Viva ICSE Computer Studies 7 : E-book

3. _______________ are vacuum tubes which are extremely sensitive to light.
(a) Diodes (b) Transistors
(c) Photomultiplier tubes (d) ICs

4. _______________ are known for their high resolution and are used in the publishing industry.
(a) Scanners (b) Handheld scanners

(c) Flatbed scanners (d) Drum scanners
5. The process which translates analog signals into digital signals is called _______________.
(a) demodulation (b) modulation

(c) static conversion (d) dynamic conversion

D. Name the following.

1. Box-shaped device connected to the serial port of a computer externally _______________
2. Electronic device designed to disperse the heat generated by the CPU _______________

3. Port developed by Apple _______________
4. Port that connects to a network and high speed Internet _______________
5. Two types of scanners _______________ _______________

E. Defi ne the following terms.

1. Hardware 2. Software
3. MODEM 4. Port

5. Video graphics array 6. Scanner
7. Pen drive 8. Blu-ray disk

F. Answer the following questions.
1. Discuss the features of three types of mouse and printers.

2. Discuss the technology of MODEM. Also, describe the diff erences between internal MODEM
and external MODEM.
3. Describe the keys of a keyboard.

4. Diff erentiate between the following.
(a) Sound card and video card
(b) RAM and ROM

(c) SMPS and heat sink
5. Write short notes on the following.
(a) Ports and its types

(b) Motherboard
(c) Scanner and its types

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