Measurement-computing Digital232 Bedienungsanleitung Seite 17

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Seitenansicht 16
Section 2 Getting Started
2.9
Pin Description
1 thru 8
DATA
PORT1
(Input or Output).
Pin 1 is bit 1 (LSB), Pin 8 is bit 8 (MSB).
Least Significant Port
9 thru 16
DATA PORT2
(Input or Output).
Pin 9 is bit 1 (LSB), Pin 16 is bit 8 (MSB).
17 thru 24
DATA PORT3
(Input or Output).
Pin 17 is bit 1 (LSB), Pin 24 is bit 8 (MSB).
25 thru 32
DATA PORT4
(Input or Output).
Pin 25 is bit 1 (LSB), Pin 32 is bit 8 (MSB).
33 thru 40
DATA PORT5
(Input or Output).
Pin 33 is bit 1 (LSB), Pin 40 is bit 8 (MSB).
Most Significant Port
41
CLEAR
(Output).
42
DATA STROBE
(Output).
43
TRIGGER
(Output).
44
INHIBIT
(Output).
45
SERVICE INPUT
(Input).
46
EXTERNAL DATA READY [EDR]
(Input).
47,48 Not used.
49
+5 Volts
(
Do not exceed 50 mA load
).
50
I/O COMMON.
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