The first simplest transistors were invented, which is basically a tiny voltage driven electric switch, but they weren't that small, considering today the smallest of integrated circuit chips, can contain millions of transistors ! They were however smaller than vacuum tubes, hence the first portable transistor radio. uniac and ENIAC were the first mainframe IBM computers, that ran on both tubes and solid state components, yet filled up an entire room !.... And about a tenth as powerful as a Commodore 64 !

so yeah..... Technology was stone age back in the 60s.