-
Built as an electro-mechanical means of decrypting Nazi ENIGMA based on military communications during world war II -
After Successful demostrating a proof-of-concept prototype in 1939. -
Conceived by Harvard physics professor Howard Aiken, and designed and built by IBM, the Harvard Mark 1 is a room-sized, relay-based calculator. -
Started in 1943, the ENIAC computing system was built by John Mauchly and J. Presper Eckert at the Moore School of Electrical Engineering of the University of Pennsylvania. -
The Z3, an early computer built by German Engineer konrad Zuse. -
By 1974, we had the first personal computer that could be purchased by the masses, the Altair 8800.
-
University of Manchester researchers Frederic Williams, Tom Kilburn, and Geoff Tooth hill develop the Small-Scale Experimental Machine (SSEM), better known as the Manchester "Baby. -
The US Army asked Bell Laboratories to design a machine to assist in testing its M-9 gun director, a type of analog computer that aims large guns to their targets. Mathematician George Stibitz recommends using a relay-based calculator for the project. -
While many early digital computers were based on similar designs, such as the IAS and its copies, others are unique designs, like the CSIRAC. Built in Sydney, Australia by the Council of Scientific and Industrial Research for use in its Radio physics Laboratory in Sydney, -
The history of computers began with primitive designs in the early 19th century.