Question

which logic gate is the key to ensuring only the latch at the given location is turned on? xor or and not

Explanation:

The XOR (exclusive - OR) gate has the property that it outputs 1 when the number of 1 - valued inputs is odd. In the context of ensuring only one latch (at a given location) is turned on, the XOR gate can be used in circuits where we want to detect a single - bit set (equivalent to a single latch on in a digital system). The OR gate would output 1 if any of the inputs (latches) are on. The AND gate requires all relevant inputs to be on. The NOT gate is a single - input inverter and not relevant for this multi - latch (multi - input) situation.

Answer:

XOR