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Nov 13, 1387
Abacus
Abacus's year was before 1387.
The abacus was invented by Egyptians and modified by the Chinese, used to add and subtract by hand. -
Period: to
Blaise Pascal
Blaise Pascal's Job was Mathematics genius.
He was Invented the first calculating machine. Using eight rotating gears and wheels. THe pasalinge perform addition and subtraction only. -
Pascaline
First called Arithmetic Machine, Pascal's Calculator and later Pascaline, it could add and subtrat two numbers directly and multiply and divide by repetition. -
Period: to
Gottfried wilhelm leibniz
Place was Germany and his job was Philiosopher historian and scientist.
His was developed a calcuator even better than Pascal's.(It could add, subtract, multiply and divide.) -
Leibniz machine
It was first calculator that could perform all four arithmetic operations : additions, subtraction, multiplication, and division. -
Period: to
Charles babbage
Charles babbage's place was London England.
His job was Inventor and mathemation.
He was begins work on his differce engine, a calculating machine that performs mathematical functions to six decimal places. Also known as the grandfather of computing. -
Period: to
Agusta ada Love Lace
Agusta ada Love Lace's Place was London and England.
Her job was a splendid mathematician.
Ada was on of the few people who fully a program for the Analytical Engine. Ada is now credited as being the first computer programmer and, in 1979, a modern programming language was named ADA in her honor. -
Period: to
Herman hollerith
Herman hollerith's place was USA.
His job was Enginner and scientist.
He was serprisingly, he did not get the idea from the work of Babbage, but rather from watching a train conductor punch tickets. In 1896, Hollerith founded the Toculating Machine Company. In 1924, the company changed its name to IBM - the Internaitonal Business Machine Corporation. -
Period: to
Tommy Flowers
Tommy Flowers place was England.
HIs job was Engineer.
Tommy disigned Colossus, the worlds first programmable electronic computer, to help solve encrypted German messages. -
Vacuum Tube Technology
This circuit board block is one of hundreds of blocks that held the 4000 vacuum tubes for IBM’s Model 701, it’s first computer intended for scientific work. -
Period: to
Alan M. Turing
Alan M. Turing's place was England.
His job Mathematician, Philiosopher and codebreaker.
He was helps the British decode secret german messages and predict missile targets. Founder of Computer Science, mathematician, Philiscopher and codebreaker. -
Integrated Circuits
An integrated circuit is an electronic circuit manufactured by lithography, or the patterned diffusion of trace elements into the surface of a thin substrate of semiconductor material.
http://en.wikipedia.org/wiki/Integrated_circuit -
Steve Wozniak
Steve Woziak's Place was USA.
HIs job was Engineer and programmer.
With his friend Steve Jobs, he co - Founded Apple computer in the mid-70s. -
Transistors
The year is late 1950’s to early 1960’s A transistor is a semiconductor device used to amplify and switch electronic signals and electrical power.
http://en.wikipedia.org/wiki/Transistor -
Tim Berners Lee
Tim Berners Lee's place was England.
HIs job was Physicist, professor and computer.
TBL is the incenter of the WWW(http) and is the president of the WWW foundation. -
Bill Gates
Bill Gates's place was USA.
His job was Nerd.
With his friend, Steve Blamer, Bill started up microsoft in 1975. -
IBM 305 RAMAC Computer with Disk Drive
The IBM 305 RAMAC was the first commercial computer that used a moving head hard disk drive for secondary storage.
http://en.wikipedia.org/wiki/IBM_305_RAMAC -
integrated Circuit
The year is late 1960's to early 1970's.
Many transistors combined together into a very small space, forming an integrated circuit.
http://en.wikipedia.org/wiki/Integrated_circuit -
Pegasus Computer
Used electronicvalves and a modular construction using plug - in packages. -
DEC PDP - 8
The 12-bit PDP-8 was the first successful commercial minicomputer, produced by Digital Equipment Corporation in the 1960s. DEC introduced it on 22 March 1965, and sold more than 50,000 systems, the most of any computer up to that date. -
Microprocessors
A microprocessor incorporates the functions of a computer's central processing unit on a single integrated circuit, or at most a few integrated circuits.
http://en.wikipedia.org/wiki/Microprocessor -
Mainframe & Minicomputer
A minicomputer is a class of smaller computers that evolved in the mid-1960s and sold for much less than mainframe and mid-size computers from IBM and its direct competitors.
http://en.wikipedia.org/wiki/Minicomputer
