Class-3rd Chapter- 1 How does computer works (VGS)

Class 3rd Computer (VGS) 

Note:- Draw it as a diagram on the first page of your notebook.

Short cut Key

1.    Ctrl + C-  Copy

2.    Ctrl + P-  Print  

3.    Ctrl + V- Paste 

4.    Ctrl + X - Cut

5.    Ctrl + O - Open a file or document

6.    Ctrl + N - Open a new page 

7.    Windows Key + L- Lock the computer 

8.    Ctrl + A - Select All 

9.    Ctrl + S- Save a file or document 

10.   Ctrl + Z - Undo previous action 

Important Full forms 

1.    CPU:-    Central Processing Unit

2.    CD:-    Compact Disc

3.    RAM:-     Random Access Memory 

4.    ROM:-     Read Only Memory 

5.    HDD:-    Hard Disk Drive

6.    KB:-    Kilobyte

7.    MB:-     Megabyte

8. GB:- Gigabyte 

9. USB :- Universal Serial Bus

10. OS :- Operating System

11. URL:- Uniform Resource Locator

12.    DVD:-     Digital Versatile Disc 

13.     PC:-     Personal Computer

14.    MS:-     Microsoft

15.    AI:-         Artificial Intelligence

16.    ISP:-       Internet Service Provider

17.    UPS:-     Uninterruptible Power Supply

18.    HTML:-  HyperText Markup Language

19.    GUI:-    Graphical User Interface

20.    HTTP:-    HyperText Transfer Protocol

Basic questions answer related to computer 

Q.1    What is computer ? 

Ans:-     Computer is an electronic machine that transform data into meaningful information. 

Q.2   Name any two input devices. 

Ans:-    Keyboard and mouse are input devices. 

Q.3    Name any two output devices. 

Ans:- Monitor and printer are output devices. 

Q.4     Who is the father of computer ? 

Ans:-    Charles Babbage 

Chapter- 1 How does computer works

A.   Multiple Choice questions

1.    a) Input

2.    c) Both a) and b) 

3.    d) CPU 

4.    c) Disk

5.    a) RAM 

B.    Mark the following statement as True or false

1. True 

2. False 

3. False 

4. True 

5. True 

C. Fill in the blanks 

1.    Input 

2. Hardware

3. CPU 

4. Software

5. RAM 

A. Answer the following questions.

Q.1    Write the full form IPO cycle? 

Ans:-    Input-Process- Output 

Q.2     Give 2 examples of processing.

Ans:     1. Calculating (for addition or subtraction)

              2. Sorting data according to names alphabetically

Q.3     Give one basic difference between the short-term memory and disk?

Ans:-     Short-term memory RAM stores data temporarily, while a disk stores data permanently.

Q.4 What do you mean by the term hardware and software?

Ans: Hardware: The physical part of a computer that we can see and touch.

Software: All the programs that run on your computer are called software.

Q.5         Give two examples of data and instruction.

Ans:-    Data: Number, text (e.g., 25, "Hello")

               Instruction: Command like "Add numbers", "Print document"