
Glossary
Remote System
Usually a bulletin board or videotex system that registered users or the public can dial up and communicate with via modem.
Request to Send
Ring Indicator
ROM
Read Only Memory.
RS-232C
Frequently shortened to
RTS
An acronym for Request To Send. This signal is generated by the terminal or computer indicating that it requires to send data to the modem. Used mainly in
S
SDLC
The standard Synchronous Data Link Control protocol used by IBM for products which conform to its System Network Architecture.
Serial Data
Data transmission in which each bit of information is sent sequentially through a single data path.
Shareware
An extension of public domain software. Individuals can obtain copies of software for free from bulletin boards or other computer users. If the software is useful to them, they are encouraged to send a small fee to the program’s author, usually for a printed manual, registration and any software updates that are available. See also Public Domain Software.
SIG
An acronym for Special Interest Group. Groups of user’s who share an interest in a particular
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