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, 32-bit integers, memory addresses, or other data units are those that are at most 32 bits (4 octets) wide. Also, 32-bit CPU and ALU architectures are those that are based on registers, address buses, or data buses of that size. 32-bit is also a term given to a generation of computers in which 32-bit processors are the norm.
The external address and data buses are often wider than 32 bits but both of these are stored and manipulated internally in the processor as 32-bit quantities. For example, the Pentium Pro processor is a 32-bit machine, but the external address bus is 36 bits wide, and the external data bus is 64 bits wide.
Alternatively it may refer to 32-bit per channel rather than 24-bit colour + 8-bit alpha. 32-bit per channel images are used to represent values brighter than white; these values can then be used to more accurately retain bright highlights when either lowering the exposure of the image or when it is seen through a dark filter or dull reflection.
An example of this is the reflection seen in an oil slick; even though the reflection is only a fraction of that seen in a mirror surface, the reflection of highlights can still be seen as bright white areas, not dull grey shapes.
32-bit file format
- ^ Gwennap, "Intel’s P6 Uses Decoupled Superscalar Design".
- 16-bit application
- 32-bit application
- History of video games (32-bit era)
- Word (data type)
- Physical Address Extension (PAE)
- Gwennap, Linley (16 February 1995). "Intel’s P6 Uses Decoupled Superscalar Design". Microprocessor Report.
CPU technologies Architecture ParallelismPipelineLevelThreads Types Components Power management
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