TRIGEM CW3S20A Canadian Product, Руководство по эксплуатации

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Note
Your computer is referred to as a 386SX computer. This
means that the micro processor can manipulate 32 bits of
data at a time over the 16 parallel data lines and address
over 16MB of memory.
Serial Ports
There are two basic kinds of general purpose I/O (Input/Output)
port. One kind is a “serial” port, where data bits are sent one
at a time along a single wire, in series. Additional wires are
used to send control signals between the transmitting and
receiving devices. These control signals allow the two
communicating devices to determine which of them will send
or receive the data, and when the first bit of a particular byte is
being sent, among other things.
Standardized “protocols” for these signals have been agreed
upon by the microcomputer industry so that the different
manufacturer’s machines can communicate with each other.
You will be prompted to insert the backup archiev diskettes
into the A drive, one at a time. It is very important that you
insert these diskettes in order. The BACKUP command
program codes each archive diskette with an identification
number, which is read by the RESTORE program. The use of
this i.d. number ensures that your files are reassembled
properly, and loaded into the correct subdirectories.
Your computer system uses the “RS-232C” asynchronous serial
communications interface. The serial port connectors are the
left-hand 9-pin “D-type” connector mounted on the system
motherboard.
Electrical information for the serial port is in Appendix A,
“Specifications.” For details on the serial port pin connections,
see Appendix C, “Connector Pinouts.”
Expanding Your System
7-3