The four generations of computers

part 1

The first generations of computers

ENIAC

The first generation of computers started with ENIAC, the first computer to use electronic valves/vacuum tubes. The first generation of computers were massive shelves and mainly used for calculations. They only had one use per computer and no operating system making them quite primitive.

The second generation of computers

The second generation of computers were smaller and had transistors. Transistors made the computers faster and require less wiring. These computers had an operating system (IBM) and used punch cards. These computers were mainly used for science and engineering.

Punch cards, transistors and vacuum tubes

Take a look at part 2 of my flyer!