internet.com
You are in the: Small Business Computing Channelarrow View Sites +
Small Business Technology
» ECommerce-Guide | Small Business Computing | Webopedia | WinPlanet |  »Close
Webopedia.com
Enter a word for a definition... ...or choose a computer category.
 
 

menu
   Home
   Term of the Day
   New Terms
   Pronunciation
   New Links
   Quick Reference
   Did You Know?
   Categories
   Tech Support
   Webopedia Jobs
   About Us
   Link to Us
   Advertising
  

talk to us
   Submit a URL
   Suggest a Term
   Report an Error

internet.com
Developer
International
Internet Lists
Internet News
Internet Resources
IT
Linux/Open Source
Personal Technology
Small Business
Windows Technology
xSP Resources
Search internet.com
Advertise
Corporate Info
Newsletters
Tech Jobs
E-mail Offers
commerce
  Be a Commerce Partner
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Xmodem
Last modified: Thursday, November 08, 2001 

Originally developed in 1977 by Ward Christensen, Xmodem is one of the most popular file-transfer protocols. Although Xmodem is a relatively simple protocol, it is fairly effective at detecting errors. It works by sending blocks of data together with a checksum and then waiting for acknowledgment of the block's receipt. The waiting slows down the rate of data transmission considerably, but it ensures accurate transmission.

Xmodem can be implemented either in software or in hardware. Many modems, and almost all communications software packages, support Xmodem. However, it is useful only at relatively slow data transmission speeds (less than 4,800 bps).

Enhanced versions of Xmodem that work at higher transmission speeds are known as Ymodem and Zmodem.

E-mail this definition to a colleague


For internet.com pages about Xmodem . Also check out the following links!

Related Links

XMODEM, YMODEM, and ZMODEM 
Uploading and downloading files from you home computer over a modem.

Xmodem, Ymodem, and Zmodem differences
Offers a brief technical explanation of the differences between Xmodem, Ymodem, and Zmodem, with tips on how they're normally used.

related categories

Communications Standards

File Transfer

related terms

checksum

communications protocol

communications software

Kermit

modem

protocol

Ymodem

Zmodem


webopedia
Give Us Your
Feedback


Modems
modem Products
Shop here to Save Money on Modems at DealTime! Search by brand or type to find the best price across 100s of stores!

Shop by Top Models:
Motorola SURFboard SB5120 Cable Modem
8 store offers from $54 - $99

Linksys BEFCMU10 Cable Modem
13 store offers from $57 - $85

Zoom X6 5590 DSL Modem (55900000)
3 store offers from $79 - $92

D-Link (DCM-202) Cable Modem
14 store offers from $50 - $80

Cisco (WIC-1DSU-T1-V2=) WAN Interface Card (WIC1DSUT1V2GN)
25 store offers from $133 - $756



JupiterWeb networks:

internet.comearthweb.comDevx.com graphics.com

Search JupiterWeb:

Jupitermedia Corporation has two divisions:
Jupiterimages andJupiterWeb


Legal Notices, Licensing, Reprints, & Permissions, Privacy Policy.

Jupitermedia Corporate Info | Newsletters | Tech Jobs | Shopping | E-mail Offers