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Hint: X comes before Y which comes before Z. They were successor protocols designed and implemented to fix perceived shortcomings in the original one. 1977: h
by lproven 2y ago
Hint: X comes before Y which comes before Z.
They were successor protocols designed and implemented to fix perceived shortcomings in the original one.
1977: https://en.wikipedia.org/wiki/XMODEM https://en.wikipedia.org/wiki/XMODEM
1985: https://en.wikipedia.org/wiki/YMODEM https://en.wikipedia.org/wiki/YMODEM
1986: https://en.wikipedia.org/wiki/ZMODEM https://en.wikipedia.org/wiki/ZMODEM
- jpalomaki 2y agoAnd then https://en.wikipedia.org/wiki/SMODEM https://en.wikipedia.org/wiki/SMODEM SModem supported simultaneous upload/download and chatting.
- lproven 2y agoFair play -- I didn't know about that one. It does seem to be less of a protocol and more of a specialised DOS client app, though...
- johng 2y agoSmodem was a game changer. So was HS/Link. Being able to chat while still doing a download was awesome. Realizing that you can upload and download at the same time was awesome. When those protocols came out they blew my mind... and before that the first time I got the added speed from Zmodem over Xmodem I was amazed as well. I sure miss those days. First modem was 2400 baud, so I was kind of a late comer.