A 16-bit Arithmetic Logic Unit Design by Using Gate Diffusion Input

Gate diffusion input (GDI) is a new technology of digital circuit design for low power. Compared with traditional CMOS technology, GDI technology can reduce the power consumption, the propagation delay and the circuit area. This work uses the GDI technology to build a 16-bit arithmetic logic unit (ALU) to perform logic operations (AND, OR, NAND and XOR), and math operations (addition, subtraction, adding 1 and subtracting 1), and finally compares it with traditional CMOS circuits.