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Chapter 1
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DCD
RX
TX
DTR
GND
DSR
RTS
CTS
RI
@ 3 #
7
3= +
@3 3 ; 3
3= * 6 7
@ +
3== C(BD 0(33 3= BH2 3 @ @ +
3== C(
BD 0(33
3
BH2* !7 3
3
7 3= @
3== @ (
B 3 @
3==
@ (B* !
3
@ 3
@
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3=
3 ;
34@ @4@*
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3
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4@
@ 3
3
3 3 3
3= 33 3== 3 C<== D
3/ 3 ;# @ # +
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4 @
3= 3 ;# +
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3=3 3 3
* 373
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Motherboard Description
.
8
Data Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Request to Send
Clear to Send
Ring Indicator
5%<
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