Class-5th Computer Generations of computer

 Class-5th Computer for VGS

  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:-        Kilobytes 

7.    MB:-       Megabyte

8.    GB:-        Gigabyte

9.    USB:-      Universal Serial Bus

10.   OS:-        Operating System

11.    URL:-     Uniform Resource Locator

12.    UPS:-      Uninterruptible Power Supply

13.   HTTP:-    HyperText Transfer Protocol

14.   HTML:-    HyperText Markup Language

15.     ISP:-    Internet Service Provider

16.    DVD:-    Digital Versatile Disc

17.     PC:-        Personal Computer

18.     DOS:-     Disk Operating System

19.     MS:-        Microsoft

20.     GUI:-    Graphical User Interface

Shortcut keys

1.     Ctrl + Shift + N:-    Create New Folder

2.     Ctrl + C:-    Copy any text or item

3.     Ctrl + X:-    Cut selected text or item

4.     Ctrl + V:-    Paste copied text or item

5.     Ctrl + Z:-    Undo previous action

6.     Ctrl + A:-    Select all text or items

7.     Ctrl + F:-    Find specific word

8.     Ctrl + S:-    Save document or file

9.     Ctrl + N:- Open a new page

10.     Ctrl + O:- Open existing document or file

11.     Ctrl + P:- Print current file

12.     Windows key + L:- Lock the computer

13.   Windows Key +D :-    Show or hide desktop

14.    F1 :-    Open help window

15.    F5 :-    Refresh current page

Basic questions and answers related to computer 

Q.1    Who is the father of computer ?

Ans:-    Charles Babbage 

Q.2    What is computer ?

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

Q.3    What is smallest unit of data in computer ? 

Ans:-    Bit is the smallest unit of data in computer

Chapter -1     Generation of computer 

A.     Key Vocabulary

1. Punched card → A card with holes punched in it to represent data for computers.  

2. Algorithm → Set of clear steps to perform a task just like a recipe of a food item.  

3. Mainframe → lesser powerful than a supercomputer used a server in large enterprises.  

4. Internet of thing → IoT - technology to connect devices over the internet.

B.    Answer the following question

Q.1     What is an abacus and how is it used?

Ans:-   The abacus is an ancient manual calculating frame with movable beads on rods use for basic arithmetic operations  

Q.2     What are the supercomputer and what are they used for?

Ans:-    Supercomputers are the fastest most powerful computers. They solve big tasks like weather report, space study and science work  

Q.3     Write any 4 limitations of computers.

Ans:-    1. Computers have no brain of their own.  

2.     They lack common sense.  

3.     They show no feelings.  

4.     They need power and human help to work.  

Q.4     Write any 4 characteristic of computers.

Ans:-     1. Computer works very fast  

2. They give correct result.  

3. They store lots of data.  

4. They can do many types of job.  

Q.5     Write any 2 features of the following generation of computer.

Ans:-  Generation 1: - i) Used vaccum tubes for circuitry  

    ii) Large in size.  

Generation 2 :-

i) Used transistor 

ii) Smaller, faster and more reliable  

Generation 3:-

i) Used Integrated circuits 

ii) High level language  

Generation 4:-

i) Development of personal computer and internet 

ii) Used microprocessor  

Generation 5:- 

i) Based on AI and parallel processing 

 ii) Used Advanced Language - Python and R