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The Difference Engine
1829-1832
1832 is when the engine has eough parts -
Period: to
Early History
This is when people started to dream and create computers -
Analytical Engine
Babbage’s team want to build an engine that calculates “All Maths”
It never finished
age of 43 Babbage had a
vision of a computer
Later on he died -
Period: to
The first generation Computer
The first generation computer
people started to build better computers
use vaccum tubes as main components
A machine uses around 1000 Vacuum Tubes
The Vacuum Tubes look like light bulbs
Punched cards, Paper tape, Magnetic tape is the input and output device -
ENIAC was release
The ENIACIt was an amazing machine which applies electronic speeds for the first time to mathematical tasks -
701 Computer announced
first computer ever built
IBM is a company that builds it -
704 Computer announced
Upgraded from 701 computer
Holds 100 megabyte -
Period: to
The second generation
The second generation computers"In Second Generation computers, the instructions(program) could be stored inside the computer's memory. High-level languages such as COBOL (Common Business-Oriented Language) and FORTRAN (Formula Translator) were used, and they are still used for some applications nowdays."
Transistor
From 1959 - 1965 -
IMB 1620 announced
it is use for stored-program data processing system for small businesses, research and engineering departments of large companies, and schools requiring solutions to complex problems in the areas of engineering, research, and management science -
IBM 360 anonced
It combines microelectronic technology, which makes possible operating speeds measured in billionths of a second, with significant advances in the concepts of computer organization. -
IBM 360 series announced
Both commercial and scientific computer -
Period: to
Third Generation Computer
Integrated Circuit is use for memory (IC)
1965 - 1971
The inventor of the IC was Jack Kilby
It was small so it was viable for everyone to buy
Input = Switches
Output = Lights
256 byte -
Space Race
961
It is a race between USA and Russia
NASA tried to build a programed space ship
Which made the 2 generation computers
So they can communicate and sent directions to the people in space -
Period: to
Fourth Generation Computers
Very large scale integrated Circuits (VLSI)
Microprocessor
1971 - now
Can put a lot of transistor and circuits elements into 1 single chip
Input = Keyboard Mouse Trackball Barcode reader etc.
Output = Monitor Printer -
apple 2 introduce
1977 it was finished
It uses circuitry
Has 4 KB - 48 KB
Has color
2 million apple 2 computers were sold by 1984
