Sequential Logic Key Terms

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Across
  1. 4. The part of a pulse where the logic level is in transition from a HIGH to a LOW.
  2. 6. Counter in which all of the flip-flops are clocked simultaneously.
  3. 7. Flip-flop inputs that can affect the operation of the flip-flop independent of the synchronous and clock inputs.
  4. 9. Input signal to a flip-flop or one-shot that causes the output to change states depending on the conditions of the control signals.
  5. 12. The number of cycles per unit time of a periodic waveform.
  6. 13. Type of flip-flop in which inputs J and K are the synchronous inputs.
  7. 15. Digital circuitry in which the output state of the circuit depends not only on the states of the inputs, but also on the sequence in which they reached their present states.
  8. 16. Delay from the time a signal is applied to the time when the output makes its change.
  9. 18. Enabled by a logic HIGH or LOW level.
  10. 19. Fraction of the total period that a digital waveform is in the HIGH state. DC = th/T (often expressed as a percentage: %DC = th/Tx100%).
  11. 21. Asynchronous input used to set Q=0 immediately.
Down
  1. 1. The amount of time required for one complete cycle of a periodic event or waveform.
  2. 2. Manner in which a flip-flop is activated by a signal transition. A flip-flop may be either a positive- or a negative-edge-triggered flip-flop.
  3. 3. Circuit that contains a NAND gate latch and two steering NAND gates.
  4. 5. Type of counter in which each flip-flop output serves as the clock input signal for the next flip-flop in the chain.
  5. 8. A sequential circuit that advances through several defined states.
  6. 10. The part of a pulse where the logic level is in transition from a LOW to a HIGH.
  7. 11. Digital signal in the form of a rectangular pulse train or a square wave.
  8. 13. Type of flip-flop in which the D (data) input is the synchronous input.
  9. 14. A sequential circuit based on a latch whose output changes when its CLOCK input receives a pulse.
  10. 17. Digital circuit that accepts binary data from some input source and then shifts these data through a chain of flip-flops one bit at a time.
  11. 20. Asynchronous input used to set Q=1 immediately.