This is a light emitting block that will display a character. They are available in eight colors: white, blue, red, green, cyan, yellow, purple and orange. It can be used to display numbers, such as for score boards and others.
Description (From Recipaedia)
A 7-segment display. Displays one of the 16 hexadecimal chatacters: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F based on a single analog input supplied to it. The input value is converted to 4-bit digital forn and used as a hexadecimal character to be desplayed. Can be placed on any vertical surface.
Hexadecimal Values:
0V = 0, 0.1V = 1, 0.2V = 2, 0.3V = 3, 0.4V = 4, 0.5V = 5, 0.6V = 6, 0.7V = 7, 0.8V = 8, 0.9V = 9, 1.0V = A, 1.1V = B, 1.2V = C, 1.3V = D, 1.4V = E, 1.5V = F
Crafting
They require 2 glass, 3 copper ingots and one bucket of paint for the colorant. This item uses the reduced color set. See the painting page.
You get 4 display blocks.
Use
The display is controlled by an analog signal applied to any edge or to the back of the block.
History
This block was added in the 1.23 update. 1.29 now has 8 colors