Microsoft Word - Digital Logic Design v_4_6a
4.4. Finite State machine State Diagram A state diagram is a graphical method of showing each state and the movement to other ...
If condition is true, T or “1” path is taken If condition is false, F or ”0” path is taken Oval shape is used for start, end ...
An ideal timing diagram for an SR flip-flop SR flip-flop discussed so far is an asynchronous sequential logic circuit since th ...
Applying the Design Steps to an SR flip-flop Note: This circuit encounters a critical race condition when SR transitions from ...
In practice, most designs use crystal oscillators which oscillate at a precise frequency, providing more reliable system clock ...
The state diagram showing the effect of Latch Control (C) on the state change. Note: This circuit, like the SR Latch Circuit, ...
4.5. Additional Flip Flops D flip-flop (or D-latch) Although we have talked about SR flip-flop first, there are many other typ ...
So you can use this design to implement a positive-edge-triggered D flip-flop circuit with preset and clear inputs. ∆t (delay) Q ...
Symbols Application: using D flip-flops with clear to build a shift register Edge-Triggered and Pulse-Triggered Flip Flop ...
A pulse-triggered flip-flop is also called “master-salve” due to its implementation which require two D-type flip-flop in a mas ...
Toggle or T Flip Flops Using a JK flip-flop to implement a negative-edge-triggered T flip-flop: Using D flip-flop to imple ...
4.6. Sequential Circuit Analysis Flip-flops may be used to design circuits with feedback, such as counters, shift registers, seq ...
Mixed-type Synchronous Finite State Machine Some outputs are Mealy-type and others are Moore-type. Analyzing Synchronous Sys ...
outputs if desired. 5) Use the PS/NS table or the composite K-map to obtain a state diagram, ASM chart or timing diagram to show ...
5) Use the PS/NS table or the composite K-map to obtain a state diagram, ASM chart or timing diagram to show the behavior of the ...
An alternative method is the use of Algorithmic State Machine (ASM) chart to describe the functionality. Analysis of JK Flip-F ...
Y 1 + = Y 2 + = 4) Obtain a PS/NS table. 5) Use the PS/NS table or the composite K-map to obtain a state diagram to show the beh ...
4.7. Debouncing Mechanical Switches Mechanical switches bounce for a few milliseconds before stabilizing in their new position. ...
D Flip Flop with Set & Reset This approach uses a D Flip Flop with Set and Clear to debounce the switch output as shown be ...
4.8. Additional Resources Wakerly, I. Digital Design. (2006) Prentice Hall Chapter 7 “Sequential Logic Design Principles” ...
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