Control history, PLC configuration, PLC input/output, memory types and memory addressing, basic instructions, mnemonic codes and ladder diagrams, simple automation systems, On-Off delay program simulation, automatic simulation of fast precise lights and buzzers, timers and counters, CX programmer, simulation and practicum of timer and counter based control systems, DIFU-DIFD concept, DIFUP-DIFD simulation and practicum, industrial control systems.