Waaay before. The abacus has existed for thousands of years.
Electro-Mechanical Computers were used before first generation of computers.
No computers.
ENIAC,EDSAC,EDVAC,UNIVAC(I &II) and MARKS1
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Second Generation computers. The VAX mentioned above is just a single model of first generation electronic computers.
By most definitions, first generation computers were the ones built with vacuum tubes.
The first minicomputers were second generation computers, but the most well known minicomputers were third generation computers.
Because the first, second, and third generation computers were also digital computers.
Second generation computers are often called transistorized computers. The transistorized computers are more advanced computers than the first generation of computers.
First generation computers.
The computer was designed to solve math problems. It then evolved into what we have today. Before computers, the abacus was a popular tool for calculating, and was usually faster then the computer (in fact, people made money by betting on what would solve first: abacus or computer)
first generation computers