The four-bit Adder-Subtractor is an arithmetic circuit capable of performing both addition and subtraction on any two 4–bit binary numbers. more…

The Full-Adder, so called because it comprises two Half-Adders, is an arithmetic circuit capable of performing addition on three single-bit binary numbers. more…

A two–to–one multiplexer is a combinational circuit that uses one control switch (S) to connect one of two input data lines (D1 or D0) to a single output (F). more…

Code converters, more specifically encoders and decoders, have been used by children and adults alike to protect private information. more…

At face value a 4 to 1 multiplexer is a logic circuit whose function is to select one data line from among four. For this reason, many people refer to multiplexers as data selectors. more…

The Half-Adder is the basic building block of all arithmetic circuits. Every microchip or machine that can perform addition, subtraction, multiplication, or division has Half-Adder blocks inside. more…