Chapter-1 Class-3 Subject- Computer
A. Tick (✓) the correct option.
1. An input device used for the pointing at, moving or selecting any item displayed on the monitor.
(a) Light pen/stylus
2. An output device that displays text, pictures and videos.
(b) Monitor
3. An output device used to listen to sounds without disturbing others.
(d) Headphone
4. An input device used to take live photos and videos.
(b) Web camera
5. It performs arithmetic operations like addition, subtraction, multiplication and division and logical operations.
(a) Arithmetic Logic Unit (ALU)
B. Fill in the blanks.
1. Data is entered into computer through various input devices like Keyboard, Mouse.
2. After, processing, the information gets stored in Storage device.
3. The processed information is given through output devices like Monitor, Printer.
4. Software is the program or instructions that run on the computer.
5. A Projector is usually used in meetings and presentations so that everyone present in the meeting can see clearly.
C. Write (T) for true and (F) for false statements.
1. A memory card is generally used in devices like mobile phones, digital cameras, play stations and other similar
devices. [T]
2. A projector is used to print information that you see on the monitor, to a paper. [F]
3.The printed paper is called printout. [T]
4. A web camera is used to take live photos and videos. [T]
5. The storage capacity of a Blu-ray disk equals to 10 recordable DVDS or around 70 recordable CDs. [T]
Input Device Output Device Storage Device
Keyboard Monitor CD
Mouse Printer Pen Drive
Joystick Projector Memory Card
Barcode Reader
Light pen/stylus
Scanner
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