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BOCA PRO16 Reference Guide
Synchronous
A data transmission in which the time between characters is
fixed by synchronizing the transmitting and receiving
communications equipment. The clock signal is typically derived
from the data stream in order to maintain synchronization.
Sysop
System Operator. This is the person or organization who
controls and maintains a videotex or bulletin board system. Most
bulletin board systems display the name of their individual
sysops when you first log on.
T
Telecommunications
The transmission of information across long distances, such as
over telephone lines.
Tele-downloading
See Software Downloading.
Teleload
See Software Downloading.
Teletext
A non-interactive information system that was the predecessor to
videotex systems. Teletext terminals consist of a specially
modified television set and keypad to provide 24 lines of 40
column color text and graphics. Connection is made to teletext
systems by specially assigned television broadcast channels,
hence the need to use a television set. Videotex terminals cannot
access the information contained in a teletext system.
Terminal
An input/output device consisting of a typewriter-like keyboard
and a display device, used for communicating with a large
computer. Any device capable of sending and/or receiving data over
a communications channel.
Terminal Emulation
Refers to the type of ASCII terminal your software will imitate
(the control characters used to perform certain screen and cursor
movement tasks vary from one terminal to another).
Text
The message portion of a data block in synchronous data
transmissions.
Turnaround Time
The time required to reverse the direction of transmission when
operating in half duplex mode.
Glossary
Glossary
pro16ref.pm6 6/14/96, 2:40 PM237
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