I think you mean “6502 gave us desktop (micro)computers.” Most 8080 and then Z80 systems of the mid-1970s used S-100 and were oriented around a separation of C

I think you mean “6502 gave us desktop (micro)computers.” Most 8080 and then Z80 systems of the mid-1970s used S-100 and were oriented around a separation of CPU and I/O, i.e. “Just plug a surplus terminal or teletype into a serial port to use the computer!” It was really the 6502 and its use by the original “self-contained” Apple I that made desktop microcomputers a real product. Yes, buying an Apple I just you just got a board, but it was it intended to be put in a desktop case (and advertised that way) with a surplus keyboard and plugged into a TV, and could use audiocassette for storage. That made it way more approachable.