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BOCA PRO16 Reference Guide
SIG
An acronym for Special Interest Group. Groups of user's who
share an interest in a particular topic. Often SIGs set up bulletin
boards, available only to SIG members.
Simplex
Data communications in one direction only.
Single-Digit Keying
Refers to videotex systems where you only need to press one
numeric key from an index. See also Double-Digit Keying.
Software
Computer program or set of computer programs held in storage,
and loaded into RAM for execution.
Software Downloading
Known as software downloading or teleloading on videotex
systems and downloading on some bulletin boards. Refers to the
transferring of software from a remote system to your computer.
Software Handshaking
A method of controlling the flow of data between two computers
or terminals. Special control characters are sent from one
terminal to the other in order to halt or re-commence the flow of
data. See also Hardware Handshaking.
SOH
Start Of Header used in synchronous transmissions indicating
the start of a header block.
Space
One of the two possible states of a binary data element. The
open circuit condition in a teleprinter circuit. Also see Mark.
Special Interest Group
See SIG.
Start Bit
When a character is transmitted asynchronously to another
computer, a start bit always precedes the actual data. Seven or
eight data bits, an optional parity bit and a stop bit will follow.
Stop Bit
The last bit or element transmitted in asynchronous transmission
of a character to return the circuit to an idle state. One or two
stop bits are sent at the end of each character of data.
STX
Start Of Text control character used in synchronous transmission
which precedes the text portion of the data block.
SYN
Synchronous Idle control character transmitted when the line is
idle in synchronous transmissions.
Glossary
Glossary
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