ENIAC,EDSAC,EDVAC,UNIVAC(I &II) and MARKS1
Vacuum tube (thermionic valve) technology.
At this point, mostly landfill and museum pieces.
The UNIVAC and ENIAC computers are of first-generation computing devices.
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vaccum tubes
abacus
valves
No computers.
The computer was not discovered, it was invented. It was a long process of invention for the computer as we know it today. First generation: (post World War II) Digital computers were enormous, developed mainly in the U.S. and used vacuum tubes. Second generation: (around 1960) Computers then used transistors; these were the first successful commercial computers. Third generation: (late 1960s and 1970s) These were characterized by using integrated circuits and miniaturizing components. Fourth generation: (1974) The microprocessor chip defined these computers, which resemble our computers today.
Electro-Mechanical Computers were used before first generation of computers.
History of computer is divided into 5 generation. The first generation of computer started form 1941 till 1956. In this generation vacuum tubes are used in computers and computers are big enough that one computer could be such big as a whole room.
Second generation computers are often called transistorized computers. The transistorized computers are more advanced computers than the first generation of computers.
vacuum tube computers
First Generation computers were computers made out of Vaccum Tubes. They were soon rejected due to the extreme heat and electricity absorption.
The first second generation computers came on the market in 1958.
Atanasoff Berry Computer
A diagram that explains the generation of the computer can be found on the Scribd website. First generation computers used vacuum tubes.
About 1942 with the Atanasoff Berry Computer.
Microsoft does not make computers.