XMODEM
Xmodem
- Date
- 1977 · confidence high
- Place
- Chicago, Illinois, United States
- Credited to
- Ward Christensen
- Field
- Communication
What it is
A simple modem file-transfer protocol created by Ward Christensen for his MODEM.ASM terminal program, which splits data into verified packets and allows resending erroneous ones.
What it led to
- the de facto standard for BBS file transfer in the 1980s
- the basis for later protocols such as YMODEM and ZMODEM
- popularized software exchange among home computer enthusiasts