Question

A. Design a circuit using D flip-flops that will generate the sequence 0, 0, 1, 0, 1, 1 and repeat. Do this by designing a counter for any sequence of states such that the first flip-flop takes on this sequence. There are many correct answers, but do not duplicate states, because each state can have only one next state.

B. A pulse-generating circuit generates eight repetitive pulses as shown in the figure. Implement the pulse-generating circuit using a binary counter circuit and a minimum of gate logic. Use J-k flip-flops for the counters that trigger on the falling edge of a clock that has a frequency eight times the frequency of one of the pulses. Research real-world systems that use this type of pulse-generating circuit. List as many systems as you can with a brief description of why they use pulsed signals.

$CESC_220-M07-8Pulses.jpg$

Answer 1

B. This can be produced with help of ring counter ckf for simple entry it Applications: (1) Used in hardware logic design to create finite state machines (2) used in adders (3) allow detection of simple bit refrets