Which technological innovations along history allowed the appearance of the computer

The first major effect the Industrial Revolution had on the environment was caused by the increased use of fossil fuel, first coal and then oil.

According to the history of computer, vacuum tubes had kick started the invention of computer.

1st generation used "Vacuum tubes" and then the next generation used "Transistor". Third generation used "Integrated circuits" and the fourth generation used "microprocessor" and the fifth generation used "Super computer". Now it's the development of Robots.

Industrial revolution gave birth to the innovation in the technologies. In each and every period people developed started using abacus, slide rule, punched cards for calculations. These gave rise to the latest technology innovations.