UMBC CMSC 313, Computer Organization & Assembly Language, Fall 2004, Section 0101

Flip Flops II

Thursday 11/18, 2004

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Assigned Reading in Murdocca & Heuring:   

Assigned Reading in Neveln:   

Assigned:  DigSim2

Due:  HW4

Slides (in PDF): Slides22.pdf

Topics Covered:

• J-K flip-flops and master-slave J-K flip-flops.
• Master-slave J-K flip-flops with a two-phase clock.
• Negative edge-triggered D flip-flops.
• Introduction to finite state machines.
• Modulo 4 counter.
• Mealy versus Moore finite state machines.
• Discussed Digsim Assignment 2

Circuits in DigSim:

Following these links will launch the DigSim Java applet and load the circuit described.

• JK flip-flop
• A master-slave JK flip-flop
• A master-slave JK flip-flop with a two-phase clock
• A negative edge triggered D flip-flop
• A Mod-4 Counter (Mealy)
• A Mod-4 Counter (Moore)