Dte-Dce Signaling Arrangements - Toshiba T1100 PLUS User Manual

The serial port lets you connect a serial device such
mouse, or bar code reader to the T l lOO PLUS.
printer is discussed in Chapter 3, 'Setting up the Computer.'
section contains information necessary to connect a variety of serial
devices to the computer.
The term 'serial' means that data is transmitted one bit at a time using
electronic pulses.
character, is formed.
The most common serial interfacing standard in the microcomputer
industry was established by the Electronic Industries Association and is
called EIA RS-232-C. Most devices that meet the RS-232-C standard
can be attached to the TIl 00 PLUS.
When connecting a serial device, note the following points:
The TIIOO PLUS serial
D
arrangement. (The TIIOO
D If you are attaching a serial printer, the system's output device
must be defined so that information from the computer is sent
through the serial port rather than the parallel port.
Serial communications
o
Tll OO PLUS is

DTE-DCE Signaling Arrangements

There are two kinds of signal ing arrangements used by RS-232-C
connections: Data Terminal Equipment (DTE) and Data Communications
Equipment (DCE).
arrangement or a DCE/DTE arrangement. The TIIOO PLUS requires a
DTE/DCE arrangement.
Signaling arrangements allow the computer to communicate with a serial
device. For example, if you connect a serial printer, the computer (DTE)
sends the printer (DCE) a signal that data is ready to be transmitted. The
printer receives the signal and sends one back telling the computer it is
ready to receive data.
Chapter 8 T11 00
The bits are collected until a byte, a unique
requires a DTE/DCE signaling
is a DTE device.)
with the serial device.
Signaling may occur through a DTE/DCE
PLUS OPTIONS
a serial printer,
as
Connecting a serial
must be set to ensure the
This
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