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4-Digit Serial LED Display - Blue digit

Product Code: MR400-012.1D
Excl. VAT: £11.10 Incl. VAT: £13.32
You will earn 11 Robo Points for buying this product

7-segment LED displays are used in many projects to visualize informations; their use is simple as lighting a LED, but it should be complicated because of the need to manage a lot of interface signals to organize more than a digit at the same time, especially when the control device used doesn't provide enough I/O lines.



  • Blue digit

The boards have a built-in 4-digit 7-segment LED display and it requires a minimum of only one I/O line to control it. It is possible to control the display through two different communication interfaces: Serial TTL or I2C.

In addition to standard hexadecimal characters, other special characters can be visualized; it is also available an independent control of decimal points, apostrophe and colon.

Communication protocol is very simple and all the informations are sent in a single byte. The most significant two bits represent the character set to be used, further two bits indicate wich one of the 4 digits is having a change and the last significant 4 bits specify the character to visualize.

Whenever possible, items which are in stock are dispatched the same day, or the next working day.

Large and/or heavy items are dispatched by UPS courier service and these orders must be placed before 15:00hrs (GMT) to ensure same day dispatch.

Small items are normally sent using a Royal Mail service for UK orders, and International Airmail or UPS for overseas orders

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4-Digit Serial LED Display (not actual colour)
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