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Xmodem

The first widely used file transfer protocol for personal computers, developed by Ward Christensen for CP/M machines. Xmodem programs supported the earlier checksum method and the subsequent CRC method of error detection. Xmodem transmits 128-byte blocks. Xmodem-1K improves speed with 1KB blocks. Xmodem-1K-G transmits without acknowledgment for error-free channels or when modems are self correcting, but transmission is cancelled upon any error.



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XML schemaXMS
XML schema libraryXMT
XML schema repositoryXN bit
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XML tag setXnix
XML vocabularyXNOR
XML websiteXNS
XMLPXO computer

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