Hey, I worked it myself and I got the same answers.
Number 2 is NOT A, right?
Hello, I just want to confirm a few boolean logic questions.
1. Both the inputs to a NOR gate are A the output will be :
A / NOT A / unknown.
I think the answer should be "NOT A".
2. If a three input NAND gate has two inputs connected to a +5V and the third input to A, the output will be:
A / NOT / unknown
I think the answer should be "NOT".
3. If one input to a NOR gate is HIGH and the other inputs are unknown, but could be either HIGH or LOW, the output is:
HIGH / LOW / UNKNOWN
I think the answer is "LOW".
Thank you for any confirmation that I am on the right track.
In terms of boolean algebra:
i). The output of a NAND gate with inputs a, b is
ii). The output of a NOR gate with inputs a, b is
1. A and A into a NOR gate yields = not A
2. Does a+5V mean the output of running a through an inverter? If so, the 3 inputs to the NAND gate are and then output
Is there unstated relationship between a and A, for example . If so, the answer is a, otherwise unknown.
3. Any relationship between LOW and HIGH, e.g. ? If so, output is
with X either HIGH or not HIGH. But even here, you get unknown.
I think the best way to deal with the logical gates is with boolean algebra. I hope your instructor or text book is more explicit on exactly what the situation is.