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Automating Measurements
Controlling Peripherals
The data will typically remain valid until the next write to the parallel port,
but you should always latch the data using the strobe. Figure 7-10 shows a
simple circuit which can be used to write to an f&bit DAC and a digital latch
DECODE
DO
3
4
,
5
I
6
7
NOTE: ESD PROTECTION, POWER SUPPLIES AND DECOUPLING ARE NOT SHOWN.
7-58
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Figure 7-10. Digital latch Circuit
DO
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