The CD74HC283E part from Texas Instruments is a 4-bit Arithmetic Logic Unit (ALU). It provides digital electronic functionality for general purpose arithmetic and logic operations such as addition, subtraction, comparison, AND,OR,XOR, and complement operations. The ALU is designed for implementing a wide range of digital applications including computing and signal processing systems as well as digital control systems. This part is comprised of four independent ALU functions which can be used as a conventional 4-bit full adder, 4-bit half adder, 4-bit subtractor, 4-bit accumulator, 4-bit AND gate, 4-bit OR gate, 4-bit XOR gate, 4-bit complement, and various logic functions. Other features of this part include high-speed operation, low input and output interface capacitance, and low power consumption.