Figure 4-11. Digital I/O Connections - National Instruments AT-MIO/AI E Series User Manual

Warning: Exceeding the maximum input voltage ratings, which are listed in
Tables 4-1 through 4-4, can damage the AT E Series board and the PC.
National Instruments is
signal connections.
+5 V
LED
+5 V
Switch
National Instruments Corporation
NOT
Figure 4-11 shows signal connections for three typical digital I/O
applications.
TTL Signal
I/O Connector

Figure 4-11. Digital I/O Connections

Figure 4-11 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. Digital output
applications include sending TTL signals and driving external devices
such as the LED shown in the figure.
liable for any damages resulting from such
DGND
4-29
Chapter 4 Signal Connections
DIO<4..7>
DIO<0..3>
AT E Series Board
AT-MIO/AI E Series User Manual