I. DIGITAL BASICS. Analog to Digital. Number Systems and Codes. Logic Gates. Logic Circuit Simplification. Standard Logic Devices (SLDs). Programmable Logic Devices (PLDs). II. DIGITAL CIRCUITS. Combinational Logic Circuits. Flip-Flops and Timers. Sequential Logic Circuits. Arithmetic Operations and Circuits. Semiconductor Memory. III. DIGITAL SYSTEMS. Analog and Digital Signal Converters. Computer Hardware and Software.