(a) synchronous and asynchronous inputs; (b) level-triggered and edge-triggered flip-flops; (c) active LOW and active HIGH inputs. (4) Briefly describe the following flip-flop timing parameters: (a) set-up time and hold time; (b) propagation delay; (c) maximum clock frequency. (5) Draw the circuit of a J-K flip flop using NAND gates building blocks. Verify using karnaugh maps that J-K flip-flop satisfy the characteristic equation: Q₁+1=J.Q₂ +K.Q₂

Electric Motor Control
10th Edition
ISBN:9781133702818
Author:Herman
Publisher:Herman
Chapter22: Sequence Control
Section: Chapter Questions
Problem 6SQ: Draw a symbol for a solid-state logic element AND.
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(1) What is a flip-flop? Show the logic implementation of an R-S flip-flop
having active HIGH R and S inputs. Draw its truth table and mark the
invalid entry.
(2) What is a clocked J-K flip-flop? What improvement does it have over a
clocked R-S flip-flop?
(3) Differentiate between:
(a) synchronous and asynchronous inputs;
(b) level-triggered and edge-triggered flip-flops;
(c) active LOW and active HIGH inputs.
(4) Briefly describe the following flip-flop timing parameters:
(a) set-up time and hold time;
(b) propagation delay;
(c) maximum clock frequency.
(5) Draw the circuit of a J-K flip flop using NAND gates building blocks.
Verify using karnaugh maps that J-K flip-flop satisfy the characteristic
equation: Q₁+1 = J.Q₂ +K•Q₂
Transcribed Image Text:(1) What is a flip-flop? Show the logic implementation of an R-S flip-flop having active HIGH R and S inputs. Draw its truth table and mark the invalid entry. (2) What is a clocked J-K flip-flop? What improvement does it have over a clocked R-S flip-flop? (3) Differentiate between: (a) synchronous and asynchronous inputs; (b) level-triggered and edge-triggered flip-flops; (c) active LOW and active HIGH inputs. (4) Briefly describe the following flip-flop timing parameters: (a) set-up time and hold time; (b) propagation delay; (c) maximum clock frequency. (5) Draw the circuit of a J-K flip flop using NAND gates building blocks. Verify using karnaugh maps that J-K flip-flop satisfy the characteristic equation: Q₁+1 = J.Q₂ +K•Q₂
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