8.1 LATCHES 133

8.2 TIMERS 137

8.3 COUNTERS 144

8.4 MASTER CONTROL RELAYS (MCRs) 146

8.5 INTERNAL BITS 147

8.6 DESIGN CASES 149

8.6.1 Basic Counters And Timers 149

8.6.2 More Timers And Counters 149

8.6.3 Deadman Switch 150

8.6.4 Conveyor 151

8.6.5 Accept/Reject Sorting 152

8.6.6 Shear Press 153

8.7 SUMMARY 154

8.8 PRACTICE PROBLEMS 154

8.9 ASSIGNMENT PROBLEMS 157

8.1 PRACTICE PROBLEM SOLUTIONS 161