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RXD
signals
software
TCAL
two-way
communication
TXD
Receive data signal. RXD indicates that a
device is currently receiving data.
Electronic impulses that transmit data from one
device to another.
A stored program or set of programs that is
loaded into RAM for execution. Compare with
hardware.
Telxon Common Application Language. Telxon's
proprietary programming language for Portable
Tele-Transaction Computers (PTCs).
Exchange of information between two devices.
After each block of data, the receiving device
sends a positive or negative acknowledgment to
the sending device.
Transmit data signal. TXD indicates that a
device is currently transmitting data.
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