Flip-Flops Questions

How many flip-flops are in the 7475 IC?
A 555 timer is connected for astable operation as shown below along with the output waveform. It is determined that the duty cycle should be 0.5. What steps need to be taken to correct the duty cycle, while maintaining the same output frequency?
With four J-K flip-flops wired as an asynchronous counter, the first output change of divider #4 indicates a count of how many input clock pulses?
The output pulse width for a 555 monostable circuit with R1 = 3.3 kΩ and C1 = 0.02 µF is ________.
Latches constructed with NOR and NAND gates tend to remain in the latched condition due to which configuration feature?
A J-K flip-flop is in a "no change" condition when ________.
How can the cross-coupled NAND flip-flop be made to have active-HIGH S-R inputs?
On a master-slave flip-flop, when is the master enabled?
Why are the S and R inputs of a gated flip-flop said to be synchronous?
The circuit given below fails to function; the inputs are checked with a logic probe and the following indications are obtained: CLK, J1, J2, J3, K1, K2, and K3 are pulsing. Q and are HIGH. and PRE are LOW. What could be causing the problem?
An RC circuit used in a 74122 retriggerable one-shot has an REXT of 100 kΩ and a CEXT of 0.005 µF. The pulse width is ________.
In VHDL, how is each instance of a component addressed?
What is the hold condition of a flip-flop?
An RC circuit used in a nonretriggerable 74121 one-shot has an REXT of 49 kΩ and a CEXT of 0.2 µF. The pulse width (tW) is approximately ________.
In a 555 timer, three 5 kΩ resistors provide a trigger level of ________.
Does the cross-coupled NOR flip-flop have active-HIGH or active-LOW set and reset inputs?
On a positive edge-triggered S-R flip-flop, the outputs reflect the input condition when ________.
A 555 operating as a monostable multivibrator has a C1 = 0.01 µF. Determine R1 for a pulse width of 2 ms.
Four J-K flip-flops are cascaded with their J-K inputs tied HIGH. If the input frequency (fin) to the first flip-flop is 32 kHz, the output frequency (fout) is ________.
Edge-triggered flip-flops must have:

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