翻訳と辞書
Words near each other
・ domain name system
・ domain selection
・ domain software engineering environment
・ domain squatter
・ domain theory
・ domain-specific language
・ domainist
・ domf
・ don't do that then!
・ donald knuth
dongle
・ dongle cracker
・ dongle-disk
・ donuts
・ doom
・ doors
・ doorstop
・ dorito syndrome
・ dorum
・ dos


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dongle : FOLDOC
dongle
/dong'gl/ (From "dangle" - because it dangles off the computer?)
1. A security or copy protection device for commercial microcomputer programs that must be connected to an {I/O port} of the computer while the program is run. Programs that use a dongle query the port at start-up and at programmed intervals thereafter, and terminate if it does not respond with the expected validation code.
One common form consisted of a serialised EPROM and some drivers in a {D-25} connector shell.
Dongles attempt to combat software theft by ensuring that, while users can still make copies of the program (e.g. for backup), they must buy one dongle for each simultaneous use of the program.
The idea was clever, but initially unpopular with users who disliked tying up a port this way. By 1993 almost all dongles passed data through transparently while monitoring for their particular magic codes (and combinations of status lines) with minimal if any interference wit


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