• The Story So Far
• I prefer REAL hardware…
• Calculator Design Club
• Truth Tables
• 4 Line to 16 Line Demux
• Design Puzzle
• Next Challenge
• Eliminatint Extra Displays – Step A
• Add Signal Senders – Step B
• Rename Signal Senders – Step C
• Add Segment Lookup ROM – Step D
• Segment Lookup ROM Contents
• Wire Lookup ROM to Senders – Step E
• Wire Unused Inputs to Gnd – Step F
• Add a Keypad – Step G
• Completed ROM Testing Jig
• Build Segment Jig – Step H
• Completed Segment Jig
• Using Segment Jig – Step I
• Signing off…

• Figure 1 ROMJig.lgi
• Figure 2 SegmentJig.lgi

• Table 1 AND Gate Truth Table
• Table 2 Four Line to 16 Line Demultiplexer
• Table 3 Segment Lookup ROM

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