- 4 digit blue alpha-numeric display with TTL, SPI or I2C Serial Interface
- Display numbers, most letters, and a few special characters
- Individual control of decimal points, apostrophe, and colon
- Baud rate and brightness values retained in non-volatile memory
The 7-Segment Serial Display (Blue) can be controlled in one of three ways: Serial TTL communication, SPI serial communication or I2C serial.