Notice for Class 4
Class-4, Computer, 2020-06-26
Chapter:- 3
Input and Output devices
- Answer the following questions :
- What is an input device? What is the role of input device?
Ans:- An input device is a device used to enter data instructions into the computer. The role of input device is to enter data and instructions into the computer.
- What is pointing device? Give an any three examples of pointing devices.
Ans:- A pointing device is an input device that allows the user to move, point or manipulate any object or text on the computer screen.
The three examples of pointing devices are:
- Computer mouse.
- Joystick
- Touch pad
Class-4, English, 2020-06-25
Unit – 10. Tenses.
There are three kinds of tenses.
1. Present tense e.g go, goes, is going, has gone, have gone, have been going etc.
2. Past tense e.g went, was going, had gone etc.
3. Future tense e.g will go, will be going, will have gone etc.
1. Fill in the blanks with the correct forms of the verbs in the simple present tense.
a. The postman brings our letters. ( bring )
b. The aeroplanes…………….in the sky. ( flies )
c. Sita …………….fruits but not sweets. ( like )
d. I always ……………..with my friends. ( play )
e. She……………very little which is not good for her. ( eat )
f. You ……………a mile everyday. ( run )
g. A cobbler……………….
h. The children ……………. sweets. ( like )
i. Avik always …………….in the afternoon. ( sleep )
j. That red bag …………….to Pema. ( belong )
Class-4, Computer, 2020-06-19
Chapter:- 3
Input and Output devices
- Select the best answer :
- The commonly used pointing devices are.
- Trackball
- Joystick
- Touchpad
- All of these
Ans:- iv. All of these.
- ………… is the computer screen, which responds to the touch of a finger or other pointer.
- Touchpad
- Pointing stick
- Touch screen
- None of the above
Ans:- iii. Touch screen.
- The ………. Monitors are heavy and consume a lot of power.
- CRT
- LED
- LCD
- None of the above
Ans:- iii. CRT
- ……………. Is a device that can take an image from a video source and project it onto a large screen.
- Webcam
- Multimedia projector
- Digital camera
- None of the above.
Ans:- ii. Multimedia projector.