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| N-bit computers |
|---|
| 2-bit | 4-bit | 8-bit | 16-bit | 32-bit | 64-bit | 128-bit |
| N-bit applications |
| 2-bit application | 4-bit application | 8-bit application | 16-bit application | 32-bit application | 64-bit application | 128-bit application |
The range of integer values that can be stored in 32 bits is 0 through 4294967295 , or -2147483648 through 2147483647 using two's complement coding. Hence, a 32-bit processor can address 4GB of byte-addressable memory.
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.
See also: 32-bit application, 32-bit era, 16-bit, 16-bit application, 64-bitIn computing, a 64-bit component is one in which data are processed or stored in 64- bit units words . The term often refers to a computer's CPU, describing the size of the registers used to hold memory addresses and other data, as well as the ALU that op
Computer architecture Computer terminology