Many parallel counters use ________ presetting whereby the counter is preset on the active transition of the same clock signal that is used for counting.

It is a characteristic of ring counters that the ________ equal to the number of flip-flops in the register.

A glitch that appears on the decoded output of a ripple counter is often difficult to see on an oscilloscope because ________.

In VHDL, if we need to remember a value it must be stored in a ________.

One method of troubleshooting involves ________ the circuit under test with a ________ or ________ and then observing the output to check for proper bit patterns.