CS Names, Dates, Inventions

abacus invented in china

thousands of years ago

Pascal and Leibniz built the first mechanical calculator in:

the 17th century

-it used peg wheels and could do 4 basic math functions

Babbage designed first mechanical computer in:

1842

Herman Hollerith, founder of IBM, designed a tabulating machine in:

1890. it used punch cards.

John Antanoff and Clifford Berry designed the first electronic digital computer in:

1939

Britain built Colossus for cracking German codes in:

1943

ASCC (automatic sequence controlled calculator) AKA Mark 1, was created in:

1944

ENIAC (electrical numerical integrator and calculator), the first general purpose electronic computer, was created in:

1946

-it had 18,000 vacuum tubes

-it cost 500,000 dollars

-built at the university of Pennsylvania

transistor was invented by William Shockley in:

1948

UNIVAC (universal automatic computer) was invented in:

1951

-solid state digital computer with stored program

1st microprocessor developed by Intel Corp. in:

1971

computers with vacuum tubes were around in:

1939-1958

computers based off of individual transistors

1958

first integrated circuits

1964

Incorporated (LSI) large scale integration

1975

basic Apple computer

1980