This topic is optional.
Phase 1
Step 1: List out all minterms in groups with same number of 1s in their binary codes Step 2: Combine codes that differ by 1 bit into bigger group and write combined code in the next column Step 3: Repeat step 2
Phase 2 Identify EPIs
Step 1: Draw PI chart and spot EPIs - EPIs are columns containing a single tick Step 2: Draw reduced PI chart if minterms are not covered.
- Find out minterms covered by EPIs
- Remove EPIs and minterms covered from the chart
- Find minimum number of remaining PIs to cover remaining minterms