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Chapter 4 Signal Connections
© National Instruments Corporation 4-21 6023E/6024E/6025E User Manual
Figure 4-10. Digital I/O Connections
Figure 4-10 shows DIO<0..3> configured for digital input and DIO<4..7>
configured for digital output. Digital input applications include receiving
TTL signals and sensing external device states such as the state of the
switch shown in the Figure 4-11. Digital output applications include
sending TTL signals and driving external devices such as the LED shown
in Figure 4-11. Figure 4-11 depicts signal connections for three typical
digital I/O applications.
LED
+5 V
TTL Signal
+5 V
DIO<4..7>
DIO<0..3>
DGND
Switch
I/O Connector