Digital System Design Basics

A digital system performs microoperations. The most well known digital system example is is a microprocessor. A microprocessor performs microoperations to run machine language instructions. Microoperations are simple operations that can be completed in one clock period, such as additions, subtractions, AND, OR, INVERT, compare, shift, rotate, read from memory, write to memory. Digital systems consist of digital circuits. That is, digital circuits are building blocks of digital systems. Examples of digital circuits include multiplexers, decoders, adders, comparators, encoders, demultiplexers, registers, counters and shift registers. All of these digital circuits are implemented by gates and flip-flops.