Processors | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1-bit | 4-bit | 8-bit | 12-bit | 16-bit | 18-bit | 24-bit | 31-bit | 32-bit | 36-bit | 48-bit | 60-bit | 64-bit | 128-bit |
Applications | |||||||||||||
8-bit | 16-bit | 32-bit | 64-bit | ||||||||||
Data sizes | |||||||||||||
bit nibble octet byte | |||||||||||||
halfword word dword qword | |||||||||||||
IEEE floating-point standard | |||||||||||||
Single precision floating-point format (32-bit) Double precision floating-point format (64-bit) Quadruple precision floating-point format (128-bit) |
In computer architecture, 12-bit integers, memory addresses, or other data units are those that are at most 12 bits (1.5 octets) wide. Also, 12-bit CPU and ALU architectures are those that are based on registers, address buses, or data buses of that size.
Possibly the best-known 12-bit CPU is the PDP-8 and its relatives, produced in various incarnations from August 1963 to mid-1990. Many ADCs (analog to digital converters) have a 12-bit resolution. Some PIC microcontrollers use a 12-bit word size.
12 binary digits have 4096 (10000 octal, 1000 hexadecimal) unique combinations.
|