The 2-bpp format typically is used for four-level grayscale displays, although any four-entry palette works. The following table shows the bits for the associated gray levels.
Bit 1 |
Bit 0 |
Gray level |
| 0 | 0 | Black |
| 0 | 1 | Dark gray |
| 1 | 0 | Light gray |
| 1 | 1 | White |
The following illustration shows the arrangement of memory for the format.