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Charles Babbage invents the first computer
Charles Babbage, a British mathematician, invents the first computer -
Colossus computer
The first programmable electronic digital computer, used for code breaking in World War II -
The semiconductor transistor
This invention was the spark that ignited a huge research effort in solid state electronics. -
first writable RAM
The first practical form of random-access memory was the Williams tube starting in 1947. It stored data as electrically charged spots on the face of a cathode ray tube. Since the electron beam of the CRT could read and write the spots on the tube in any order, memory was random access. The capacity of the Williams tube was a few hundred to around a thousand bits, but it was much smaller, faster, and more power-efficient than using individual vacuum tube latches. -
The first Commercial computer
The UNIVAC I was the first American computer designed at the outset for business and administrative use with fast execution of relatively simple arithmetic and data transport operations, as opposed to the complex numerical calculations required of scientific computers. As such the UNIVAC competed directly against punch-card machines, though the UNIVAC originally could neither read nor punch cards invented by J. Presper Eckert and John Mauchly -
First portable electric calculator
An electronic calculator is a small, portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics.
The first solid state electronic calculator was created in the 1960s The pocket sized devices became available in the 1970s invented byTexas Instruments -
First personal computer
Personal computer history doesn't begin with IBM or Microsoft, although Microsoft was an early participant in the fledgling PC industry. The first personal computers, introduced in 1975, came as kits invented by IBM
