3 ms·

So Bravo begat Word, and ^Z survived as EOF into DOS...

• Sanddancer 10y ago
  ^Z in DOS was a holdover from its roots as a CP/M clone. CP/M in turn cribbed it from certain DEC OSes, because that's what Gary Kildall used while making CP/M. So ^Z is a case of convergent evolution.
  • jandrese 10y ago
    It's an easy mnemonic for Ctrl-Z to represent the end of something. Also fairly easy to type on a Qwerty keyboard.
  • kps 10y ago
    > So ^Z is a case of convergent evolution. More likely common ancestry, no? DG RDOS also used ^Z to end input (not sure if it was stored in the file); also PARC built their own PDP-10 clones.