Radio Shack TRS-80 PT-210 Service Manual page 18

33.3 m s
I
33.3 m s
1 -1 3 0 0 Baud
Mark
.
.
RxD., TxD
(Odd., Even Parity)
-START Bit
1
-STOP Bit
-
Parity Bit: Odd or Even
Mark
1-2 1 1 0 Baud
100 mS
Mark
1
DATA Bit (7 Bits)
START Bit
Parity Bit: Odd or Even
,
Mark
RxD., TxD
(Odd, Even Parity)
Space 1 Bit1
DATA Bit (7 Bits)
1 1 Bit1 2 Bits
I
I
STOP Bit
start Bit
NON-Parity Bit
I
1
I
Figure 15. Timing Chart