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If the value of the pin STB (Strobe Input) falls to low level, then

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in Microprocessor by (39.4k points)
If the value of the pin STB (Strobe Input) falls to low level, then

(a) input port is loaded into input latches

(b) input port is loaded into output latches

(c) output port is loaded into input latches

(d) output port is loaded into output latches

This question was addressed to me in class test.

This interesting question is from Modes of Operation of 8255 topic in portion Basic Peripherals and their Interfacing with 8086/88 of Microprocessor

1 Answer

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by (49.2k points)
Correct option is (a) input port is loaded into input latches

The best I can explain: If the value of the pin STB (Strobe Input) falls to low level, the input port is loaded into input latches.

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