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In CPLD, there are many input switches arranged in a switch bank, if an AND gate is behaving oddly but could be the reason?

In CPLD, there are many input switches arranged in a switch bank, if an AND gate is behaving oddly but could be the reason? Correct Answer Concurrent execution of statements

A CPLD is a device which has many input outputs and logic gates and it also includes interconnection between them. The inputs are arranged in the form of switch banks, the gate may perform different due to concurrency of the statement. Due to concurrent statements, the state of a switch can vary and which can affect the output.

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