Biostar U8798 Manuale Proprietario
Mainboard Features
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6-3. Serial and Parallel Interface Ports
This system c omes equipped with two serial ports and one parallel
port. Both types of interface ports will be explained in this
chapter.
6-3-1. The Serial Interface: JCOM1/ JCOM2
The serial interface port is sometimes referred to as an RS-232
port or an async hronous communication port. M ice, printers ,
modems and other peripheral devices can be connec ted to a serial
port or an async hronous communication port. M ice, printers ,
modems and other peripheral devices can be connec ted to a serial
port. The serial port can also be us ed to connect your c omputer
with another computer s ystem.
with another computer s ystem.
Connectivity
The serial ports c an be used in many ways , and it may be
necessary to become familiar with the pinout diagram. T he
The serial ports c an be used in many ways , and it may be
necessary to become familiar with the pinout diagram. T he
following c hart gives you the function of eac h pin on the 9-pin
connector and some of the 25-pin connector. This information c an
be used when configuring certain s oftware programs to work with
connector and some of the 25-pin connector. This information c an
be used when configuring certain s oftware programs to work with
the serial ports.
Signal
Name
DB9 PIN
DB25 PIN
DCD
Data Carrier Detect
1
8
RX Receive
Data 2
3
TX Trans mit
Data 3
2
DTR
Data Terminal Ready
4
20
GND Signal
G round 5
7
DSR Data
Set
Ready 6
6
RTS
Reques t to Send
7
4
CTS Clear
to
Send 8
5
RI Ring
I ndicator 9
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