 |
This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (August 2007) |
| Processors | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 4-bit | 8-bit | 12-bit | 16-bit | 18-bit | 24-bit | 31-bit | 32-bit | 36-bit | 48-bit | 64-bit | 128-bit |
| Applications | |||||||||||
| 16-bit | 32-bit | 64-bit | |||||||||
| Data Sizes | |||||||||||
| nibble octet byte word dword qword | |||||||||||
In computer architecture, 48-bit integers, memory addresses, or other data units are those that are at most 48 bits (6 octets) wide. Also, 48-bit CPU and ALU architectures are those that are based on registers, address buses, or data buses of that size.
Computers with 48-bit words include CDC 1604 and BESM-6.
The IBM AS/400, in its CISC variants, is a 48-bit addressing system. The address size used in logical block addressing was increased to 48 bits with the introduction of ATA-6.
The minimal implementation of the x86-64 architecture provides 48-bit addressing encoded into 64 bits; future versions of the architecture can expand this without breaking properly written applications.
Images
In digital images, 48 bits per pixel, or 16 bits per each color channel (red, green and blue), is used for accurate processing. Such images do not look much better than 24-bit images, but the existence of more shades between colors (65,536 as opposed to 256) means that more operations can be performed on the image without risk of noticeable banding or posterization.
|
||||||||||||||||||||||||||||
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)
