NEC PC-8201A - Page 169

Chapter 8
known as "self-echo" which displays the transmitted data from the
PC-8201.
When the PC-8201 is used as a terminal for mainframe (large
computer), the Full Duplex format is used and when the PC-8201 is
connected to another personal computer for data transmission the
Half Duplex format is used.
J-i The Half Duplex format indicates that transmitting and
receiving cannot be executed simultaneously (namely,
when one computer transmits, the other can only re¬
ceive). While in Full Duplex format, transmission and
reception are executed simultaneously. The PC-8201
has the capacity for a true Full Duplex communica¬
tion. The format of the command can be switched even
if the ECHO is being used.
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