Chapter : 2: ICT Tools

Q.1 Fill in the blanks:

1. Trackball is an input device.
2. Tablet is the cheapest type of computer.
3. Smart TV are the recently available type of visual display unit.
4. In the General Packet Radio Service (GPRS), data is split into packets and transmitted at broadcast frequencies.
5. GSM is acronym for Global System for Mobile communication.
6. CDMA is acronym for Code Division Multiple Access.
7. CDMA provides higher channel capacity than TDMA.
8. With CDMA, there are fewer dropped calls.
9. Internet is (uses) the Information superhighway.
10. Internet uses digital communication technologies.

Q.2 State whether the following statements are true or false:

1. A computer is an interactive device. True
2. A computer can execute only those instructions which are defined in its library. True
3. Advanced mobiles (smartphones) use bluetooth for internet access. False
4. CDMA stands for Cell Division Multiple Access.                   False
5. CDMA is popular all over the world.     False
6. CDMA provides higher channel capacity and data throughput than TDMA.    True

  Q.3 Multiple choice questions (Single Correct Answer):

1. An example of an input device of a computer is Trackball.
2. Bluetooth is a technology of wireless connectivity of two devices.
3. The recently introduced type of television receiver set is smart TV.
4. The input device of a tablet computer is touchscreen.

Q.4 Multiple choice questions (Two Correct Answer):

1. Technologies of wireless connectivity are Wi-Fi, Bluetooth.
2. The two most common types of mobiles are GSM, CDMA.

Q.5.Answer in brief:

1. Give a any four examples of  the input devices and output devices of a computer. 

• Input devices : Keyboard, trackball, joystick, scanner, microphone, camera. 
• Output devices: Monitor, speaker, plotter, printer

2. Give a any four examples of  (i) memory devices of a computer (ii) common applications of computer. 

    (i.) Hard disk, USB drive, Flash drive, cd, magnetic tape, DVD.  

    (ii) Railway reservation, airline booking,  e-shopping, e-banking, training and classroom teaching.

3. State any four types of computers available today. 

       Computer come in all sizes and capabilities: Super computer, desktop, tablet, laptop, notebook

4. Specify (state the type of televisions avaiable. 

       TV sets have progressed from monochrome to Colour. Different types of Colour TV monitors are CRT (Cathode Ray Tube), plasma, TFT LCD (thin film transistor Liquid crystal display and LED (Light Emitting Diodes)

5. State any four applications supported by modern mobile phones and tablet PC's.

    Camera, media players, FM radio, web browsing, Wi-Fi, and games.

6. What is a touchscreen?

    A touch screen is an electronic visual display that can detect the presence and location of a touch         within the display area. The term generally refers to touching the display of the devices and display     of the device with a finger or hand.

7. Write a short note on mobile phone standards. (omit)

8. State the advantages of CDMA technology.

• CDMA is the newest and allows for the highest capacity and highest mobile data throughput.
• CDMA provides many times the channel capacity of TDMA. 
• CDMA also claim that there are fewer dropped calls when crossing cell boundaries.

9. Write the uses of Internet. 

• to send and recieve mails.
• to search and read millions of files stored in computers throughout the world.
• to communicate live with others connected to the internet.
• to advertise the products of the company.
• shopping online.
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