The 8-bit computer architecture is a microprocessor architecture that has a datapath width or a highest operand width of 8 bits or an octet. These architectures typically have a matching register file with registers width of 8 bits.

Applications

As a departure from the older 4-bit microprocessors, 8-bit CPUs were used in many military applications, instrumentation, and complex control and processing systems.

8-bit microprocessor

• Intel 8008
• Intel 8085
• National IMP-8
• National LMP-8
• Hitachi 6309
• Motorola 6800
• Motorola 6809
• Rockwell PPS8
• Mostek 5065
• Mostek 6100
• Zilog Z80

8-bit microcontrollers

• Intel 8048
• Intel 8051
• Motorola 6805
• Rockwell 6500
• Philips 7C522
• PIC16C56
• COP820