-
Leibniz invents the Stepped Reckener
The Stepped Reckener was the first to add, sutract, multiply, divide, and divide square roots. -
Blaise Pascal invents the pascaline
It only preformed addition and it never worked. -
Charles Babbage invents Analytical Engine
Followed programs on punch cards and designed to make decisions. -
Ada Byron
First programmer and stated no commputer no matter how powerful they can think today. -
Hollerith creates IBM
Herman Hollerith created (now) IBM -
ENIAC is invented
Eniac/ABC still needed pulling, plugging & switch flipping to change -
John Von Neumann
Idea of stored program in CPU to control all functions. Solved problems with instructions on paper tape. -
UNIVAC is invented
used stored program concept correctly & first computer language (C-10) with first keyboard. -
The abc is developed
ABC (first electronic computer) used binary number system of 1s and 0s still used today. -
Bill Gates
Created a BASIC language interpreter (1975)
Founded Microsoft (1977)
Developed MS-DOS for PCs and Windows -
Mainframes to Microcomputers
Large & Expensive ($100,000-millions range)
Large corporations, banks, governments & universities -
first apple commputer
Stephen Wozak and Steve Jobs built the first apple commputer in a garrage. -
Fouth generation computers
Made Microcomputers (computer small enough to fit on a desktop) possible -
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