Canon X-07 User Manual page 102

2.5.3 RS·232C communication
RS-232C is the interface specifications for serial communication set by the
American EIA. In Europe there is an interface specification called V. 24.
This specification is identical to the RS 232C specifications. Originally, the
RS-232C specifications were set for interface between modem and terminal
devices. The specifications are covered in Chapter 3 Reference. This section
explains the general concept behind RS-232C and serial communication.
Serial communication is a method used to transmit/receive one line of com­
municating data. This method is the most basic form of communicating data.
Telephone, radio, TV, etc. use serial communication.
However, inside the X-07, several
dingly, such parallel data must be converted to serial data. The form of this
conversion is set by the transmission mode. In the previous section, ACIA
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ansmission mode was mentioned. This referred to a conversion form.
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Also, in serial communication, the timing of the signals is very important. To
do so, it is necessary to know the transmission rate of the signals. The transmis­
sion rate of signals is referred to as the "baud rate", and it is in bits/second.
This denotes how many bits (the smallest unit of information) can be transmit­
ted in one second.
By changing the baud rate and the transmission mode while conforming to the
RS-232C specifications, data can be transmitted to and received from various
1/0 devices (for example modem of an acoustic coupler) ..
Please refer to Chapter 3 Reference for details on baud rates and transmission
modes.
(8
units) data are handled in parallel. Accor­
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