- #1
pikminman
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Homework Statement
i.imgur . com/tjtAC.png (Sorry! It's fine I promise!)
I was given this circuit and I need to know what exactly what kind of circuit it is. i.e. what kind of logical operation it performs. [itex]V_o[/itex] is the output. IN1, 2, 3 are the inputs. I need to know the states of conduction in each diode for every combination of the inputs. A logic LO input can be taken as 0v and HI can be taken as [itex]V_{cc}[/itex]
Homework Equations
n/a
The Attempt at a Solution
I know that the left hand side of the circuit looks like it's going to be an AND gate. I understand the reversed diodes and semi-understand the pull up resistor. But I have NO idea why there are two diodes in series, and I don't know why there is a pull down resistor. Help would be much appreciated!
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