Interlocking display

1. A display comprising:

a rectangular display panel; and

a housing that comprises a rectangular frame that surrounds the rectangular display panel, wherein a short edge of the rectangular frame comprises keys and keyways, wherein the keys and keyways comprise a stack of planar extensions and planar slots, wherein each of the planar extensions comprises a rounded end, and wherein each of the planar slots comprises a rounded seat.

2. The display of claim 1 , wherein the stack defines a pivot axis for pivotal movement of the display without translational movement of the display for interlocking contact between the short edge and a short edge of another instance of the display.

3. The display of claim 1 , comprising a short edge cover.

4. The display of claim 3 , wherein the short edge cover interlocks with at least one of the keys, with at least one of the keyways or with at least one of the keys and at least one of the keyways.

5. The display of claim 4 , wherein the short edge cover comprises an elastomer.

6. The display of claim 1 , wherein the housing comprises a back surface and a bridge recess in the back surface of the housing.

7. The display of claim 6 , wherein the bridge recess comprises an electrical connector.

8. The display of claim 6 , comprising a bridge, wherein a portion of the bridge is receivable in the bridge recess.

9. The display of claim 8 , wherein the bridge comprises at least two electrical connectors.

10. The display of claim 1 , comprising an accessory that comprises an edge that comprises keys and keyways interlockable with at least a portion of the keys and keyways of the short edge.

11. The display of claim 1 , wherein each of the planar extensions comprises the rounded end as a convex rounded end, and wherein each of the planar slots comprises the rounded seat as a concave rounded seat.

12. A system comprising:

a first display that comprises a first rectangular display panel and a first housing that comprises a first rectangular frame that surrounds the first rectangular display panel, wherein a short edge of the first rectangular frame comprises a first set of keys and keyways; and

a second display that comprises a second rectangular display panel and a second housing that comprises a second rectangular frame that surrounds the second rectangular display panel, wherein a short edge of the second rectangular frame comprises a second set of keys and keyways, wherein the first set of keys and keyways interlock with the second set of keys and keyways,

wherein the first housing comprises a first back surface and a first bridge recess in the first back surface of the first housing and the second housing comprises a second back surface and a second bridge recess in the second back surface of the second housing for a bridge that comprises electrical connectors that connect to a first electrical connector of the first bridge recess and a second electrical connector of the second bridge recess.

13. The system of claim 12 , wherein the first set of keys and keyways and the second set of keys and keyways define a pivot axis for pivotal movement between the first display and the second display.

14. The system of claim 13 , wherein the first set of keys and keyways and the second set of keys and keyways interlock to prevent translational movement between the first display and the second display.

15. The system of claim 12 , comprising the bridge, wherein the bridge comprises a first portion that fits into the first bridge recess and a second portion that fits into the second bridge recess.

16. The system of claim 12 , wherein the first set of keys and keyways comprises a stack of planar extensions and planar slots and wherein the second set of keys and keyways comprises another stack of planar extensions and planar slots.

17. The system of claim 16 , wherein each of the planar extensions comprises a rounded end and wherein each of the planar slots comprises a rounded seat.

18. A display comprising:

a rectangular display panel; and

a housing that comprises a rectangular frame that surrounds the rectangular display panel, wherein a short edge of the rectangular frame comprises keys and keyways, and wherein the housing comprises a back surface and a bridge recess in the back surface of the housing, wherein the bridge recess comprises an electrical connector.

19. The display of claim 18 , comprising a bridge, wherein a portion of the bridge is receivable in the bridge recess.

20. The display of claim 19 , wherein the bridge comprises at least two electrical connectors.