Computer Generations

                    

               

          Hello Guys ! Today we discuss about Computer Generations . If we want to learn about Technology then starts with basic knowledge that's about it's different Generations . According to Technical history , Computer is divided in 5 Generations .

                       Every generation has different features with many different technology used in it .Let's start discussing feature of these different generations.

   First Generation Computer :- 

• 1st Generation , starts in 1940 and ends in 1956 .

• In these 16 years of 1st generation,  Scientist  use Vacuum Tubes in systems. Because of vacuum tubes systems became so large in size . 

• In these systems , Scientist use Punch card as an Input Device 

• Magnetic Tape and Punch cards used as Memory .

• Some example of this generation computer systems are MARK-1 , ENIAC , UNIVAC -1 .

    Second Generation Computer :-

• 2nd Generation , starts in 1956 and complete in 1963 . 

• In these 8 years of 2nd generation , Scientist use Transistor on the place of vacuum tubes . By the use of Transistors , size of systems became small as compare to 1st generation computer . 

• In this system , Punch card and Magnetic Tape used as an Input device .

• Magnetic Tape used as a Memory . 

• Some example of 2nd generation computer systems are IBM -700 , IBM-1401.

    Third Generation Computer :- 

•  It starts in 1963 and ends in 1971 .

•  In these 9 years of 3rd generation , Integrated Circuits Technology used by these systems .    By  this technology computers are reduced in size .

•  In this system , Input device is Keyboard with Memory as  Magnetic Disk .

•  Some examples of 3rd generation are IBM-360, IBM -370 , NAV-7500 .

     Fourth Generation Computer :-

•  4th Generation starts from 1971 and presently in use .

•  In this generation ,we use Microprocessor on the place of IC's , by which size of Computer  system is reduced .

•  In this system , we use devices like Mouse , Keyboard , Scanner  , Video and Sound .

•  Memory of 4th Generation computer system is High End Magnetic Disk . 

•  Examples of 4th generation are Modern day PC's , Laptop , Palmtop .

    Fifth Generation Computer :-

• 5th Generation starts in 1989 and continue in working for future use . 

• In this generation we use Artificial Intelligence . 

• In this system ,we use devices like robot who understands Human voice and expressions . 

• In this generation Tiny Memory cards are use in memory space. 

• Example of 5th generation computer are PARAM , CRAY-1 , ANURAG .

How to easily learn Tables from 1 to 99

Hello Guys ! I am your Friend Yashi Mishra . 

                         In today's world, every human being wants to stand at the forefront of the crowd , whether it is a small child or a student going to a college or we say that the person doing the job. 

Every person wants to show himself perfect, Because of that he wants to make himself perfect in every field. 
In today's world, the person does not get the Success that only works by rote learning.Only those get success who have the right knowledge which is practically used also .

Every person wants to solve their  problems quickly and easily. Today many websites in the digital world give an information on any subject in front of you in an interactive way.

Every person seen this information with interest and this information is always remembered. 

       My blog is made on interesting  tricks and facts / in my blog you will find many simple tricks of math’s by which you can complete your calculation in few seconds . 

         In my blog, you will find information about computer technology so that you can make yourself successful in today's digital world.

              I have told many facts related to history in my blog that you do not often get in the book.

⧪        Just like in a sea, there is a lot of depth and how big it is, in my blog, you will get lots of information and lots of mysterious things will come to know too

               So guys start with some of the interesting tricks of maths / we learn  maths  tables many times  but forget some time later / and even if try to learn it again we remember aprx.  20 to 30 tables.

                Today we will learn how we can remember the table from 1 to 99 and then 100 to 999 in a few seconds.

Learning Table from 1 to 99

• Start with table of 2 

In a simple way we write even number from 2 to 20 in a sequence  .

2

4

6

8

10

12

14

16

18

20

Result is Table of 2 .

• Next Table of 8 

For table of 8 take even number in ascending order from 8 to 0 .

8

6

4

2

0

                      8(Repeat the sequence)

6

4

2

0

                               After that Add 1 to 8 numbers in front of these number .

8
16
24
32
Split 8 in 4-4
40
48
56
64
72
80

That's the result .

• Next Table is 12

In table of 12 Split 12 in 1 and 2 format and then write table of 1 and 2 separately like that :

Table of 1	Table of 2	Table of 12
1	2	12
2	4	24
3	6	36
4	8	48
5  +	1   0	60
6  +	1   2	72
7  +	1   4	84
8  +	1   6	96
9  +	1   8	108
10  +	2   0	120

As you see in the table we add first value of both the tables and then join the remaining value.

• Next Number is 78

Same method use again as write table of 7 and 8 separately and then add unit value of the tables . 

Table of 7	Table of 8	Table of 78
7	8	78
14+	1   6	156
21+	2   4	234
28+	3   2	312
35+	4   0	390
42+	4   8	468
49+	5   6	546
56+	6   4	624
63+	7   2	702
70 +	8   0	780

By this method anyone can easily learn any table from 1 to 99.
If you like my post then please do comment in comment box and if there is any query regarding this method then fell free to ask .