## 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

Section 3 notes

Reduction of the Primitive Flow table

Assigning outputs to unstable states

Race Free State Assignment

Videos for section 3

How to assign outputs to unstable states

LONG video on Race Free State assignment

Hazards in ASC

Hazards and how to overcome them in ASC design

Design of ASC - Part 1

Design of ASC - Part 2

Design of ASC - Part 3

Design of ASC - Part 4

Another example of problem solving in ASC

Solutions to real-world ASC problems

Section 4 notes

Clocks and Schmitt Trigger

The Binary Weighted DAC

The R/2R Ladder DAC

The Tracking (Ramp or Staircase) ADC

The Flash ADC

VIDEOS for section 4

Understanding the R2R ladder

Understanding the Flash Converter

ELET1215 Homepage

### © copyright 2016 Stephen E. Mendes, Barbados.