"Before microchips existed, computers were built with mechanical relays." Should probably say something about vacuum tubes as well!
And discrete transistors. Now that my curiosity is piqued, I found this nice timeline:
https://www.computerhistory.org/timeline/computers/
It looks like transistorized computers were dominant at the point when integrated circuits were introduced.
And discrete transistors. Now that my curiosity is piqued, I found this nice timeline:
https://www.computerhistory.org/timeline/computers/
It looks like transistorized computers were dominant at the point when integrated circuits were introduced.