Intel introduced the first 8-bit microprocessor in 1973, which could perform arithmetic and logic operations on 8-bit words. This was the Intel 8008, which was later replaced by the Intel 8088. Zilog-80 and Motorola M6800 are two other 8-bit
16-bit integers, memory addresses, and other data units are those that are 16 bits (2 octets or 2 Bytes) wide in computer architecture. 16-bit CPU and ALU architectures are also ones that use 16-bit registers, address buses, and data buses. Microcomputers with 16-bit microprocessors are known as 16-bit microcomputers.
The 80386, 80486, and Pentium are examples of CPUs with 32-bit architecture.