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The difference engine
This is when the difference engine was first built. -
Period: to
The early History
-Charles Babbage had wanted to ivent a programable machine
-first difference engine was complete
-made a small scale model
-he did not finish his work
-Ada Lovelace had completed his work after -
Period: to
The First Generation
The First Generation 1940 - 1956
The main component of this
generation was the vacuum tubes.
Input: Punch cards and paper tape
Output: printouts
Memory storage devices: Magnetic Drum Memory & Magnetic Core Memory
Two Examples of Computers :
UNIVAC & ENIAC -
ENIAC
The Eniac was completed on 1945. -
UNIVAC I
The first UNIVAC-I was delivered. -
Period: to
The Second Generation
The Second Generation 1956 - 1963
The main component of this
generation was the Transistors.
Input: Punch cards
Output: printouts
Memory storage devices: Magnetic cores
Two Examples of Computers :
IBM 7094 series & IBM 1400 series -
IBM 1400 Series
This was When The IBM 1400 was released, during the early 1960s. -
IBM 7094
The first IBM 7094 was manufactured. -
Period: to
The Third Generation
The Third Generation 1964 - 1975
The main component of this
generation was the integrated circuits.
Input: keyboards
Output: monitors
Two Examples of Computers :
UNIVAC AC 9000 & IBM 370 -
IBM 360
The IBM 360 was delivered. -
UNIVAC AC 9000
The UNIVAC 9000 series was introduced during the mid-1960s. -
Period: to
Fourth Generation
the Fourth Generation 1975 - present day
The main component of this
generation was and is the microprocessors
Input: keyboards
Output: monitors
Examples of Computers :
Apple Macintosh & IBM PC -
Apple Macintosh
This was when Steve Jobs had presented the Apple Macintosh for the first time.
