ELET1215 - Digital Electronics 2

LECTURE NOTES

Section 1 notes
Counters, Latches and Registers
The Bidirectional Shift Register
Comparison of synchronous and asynchronous counters
Waveforms for synchronous/asynchronous counters
Mealy and Moore Finite State Machines
General Model of an Asynchronous Sequential Circuit
VIDEOS for Section 1
Design procedure for synchronous 4-bit binary counter
Design procedure for asynchronous (ripple) counter
Division of binary nymbers using shifting

Section 2 notes
Analysizing Asynchronous FSM - Transition Table
Understanding Flow Tables
Stability
Races
Latches
Analysis of asynchronous circuits built with latches
Implementation with latches
VIDEOS for section 2
Find the Transition Table from the logic diagram
Finding races and cycles in transition table
Drawing race diagrams for a transition table
Drawing Total State Diagram for a Transition Table
ANOTHER longer video - showing how to draw Total State Diagrams and Race Diagrams for Transition Table
Using Latches to construct Asychronous Sequential Devices

Reduction of the Primitive Flow table
Assigning outputs to unstable states
Race Free State Assignment
Clocks and Schmitt Trigger
The Binary Weighted DAC
The R/2R Ladder DAC
The Tracking (Ramp or Staircase) ADC
The Flash ADC


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