Hello everyone, happy to meet you all today through my blogs . Today's blog will be the history of how computers generated and got modified through several ages . computers started from a big calculator and changed into small handy mobile now .

The computer growth is identified by calculating the development and use of advanced components in it . so by grouping the development stages it is categorized into many generations .Let's see what are they .

First generation :

• A basic  idea of computer  is it's 1st generation computers which was from 1942 - 1955 .
• The main component used was Vacuum tubes .
• They were very gigantic which even occupied the space of an entire room .
• Consumed more power to work.
• It used machine language .
• Eg : ENIAC , EDVAC , UNIVAC 1 [ENIAC weighed about 27 tons , size 8 feet  x 100 feet x 3 feet and consumed around 150 watts of power.

Second generation :

• It came into use by 1955 to 1964 .
• The main component used was Transistors .
• They were smaller when compared to 1st generation computers  and consumed less heat and power .
• Punched cards were used .
• The very first operating system was developed .
• Batch processing and multiprogramming were included .
• Both machine language and assembly language were used .
• eg : IBM 1401 , IBM 1620 , UNIVAC 1108

Third generation :

• It started from 1964-1975 .
• Integrated circuits [IC] were implemented .
• Computers were smaller , faster and more reliable .
• It relatively consumed less power .
• High level languages were used .
• Eg : IBM 360 SERIES , HONEYWELL 6000 SERIES .

Fourth generation :

• It was invented in 1975 and was in use till 1980 .
• A new component micro processor [very large scale integrated circuits(VLSI)
• The size became smaller and  faster .
• Microcomputer series such as IBM  and APPLE were developed .
• Portable computers were introduced .

Fifth generation :

• It started in late 90's that is from 1980 to till now .
• The computers which we use now are 5th generation computers but in evolved forms .
• The main component was ultra large scale integration [ULSI] .
• They had the features of parallel processing.
• Computers contains super conductors .
• The size was drastically reduced .
• They can recognize images and graphics .
• Introduction of artificial intelligence and expert systems .
• Able to solve high complex problems including decision making and logical reasoning .

Sixth generation :

• These are the computers which will be invented in future including many techniques and modern components .
• There may be parallel and distributed computing .
• Computers will develop the robotics .
• Including natural language processing .
• Development of voice recognition software .

Thanks for reading !💙