digital design with sm charts
Post on 26-Mar-2015
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DIGITAL DESIGN WITH SM CHARTS
• SM chart is also called an Algorithmic State Machine (ASM) chart.
• It is easier to understand the operation of digital system by inspection of the SM chart compared to a state graph.
Components of an SM chart
Example of a SM chart
Equivalent SM Blocks
Equivalent SM charts for combinational circuit
SM BLOCK with feed back
Different forms realization
Conversion of state graph to an SM chart
Multiplier
K
Sh
Ad
Load
Done
St
M
Add-shift control
Counter
Block diagram of the Electronic Dice Game
Flow chart for Dice game
State graph for Dice game
SM chart for Dice game
PLA table for Multiplier Controller
A+ = A’BM’K + A’BM + AB’K; B+ = A’B’St + A’BM’ + AB’; Load = A’B’St Sh = A’B’St = AB’; Ad = A’BM’; Done = AB
PLA table for Dice game
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