Overview
Serial 7-Seg 8-Digit Board is a development tool for 7-Segment Displays.
Board features MAX7219 connected to 8 Common-Cathode LED Displays in a row.
IDC10 connectors enable easy connection. Ready-to-use examples are provided with the board.
Description
The Serial 7-Seg 8-Digit Board features compact, serial input/output common-cathode display drivers MAX7219 that interface microprocessors (µPs) to 7-segment numeric LED displays via SPI interface. There are a BCD code-B decoder, multiplex scan circuitry, segment and digit drivers, and an 8x8 static RAM that stores each digit provided on the board. Display drivers are connected to 8 Common-Cathode LED displays placed in one row.
Examples
Examples provided with this board will show you how to connect an MAX7219 to the microcontroller easily. Each example contains a detailed description of the relevant program including comments. All these examples can be downloaded from this page as well.
- Demonstration of how to display a static number on eight 7-segment displays.
- Example of displaying numbers (0000, 0001, 0002 .. 9999) on eight 7-segment displays. Each digit is on for 1 second.
- Example of reading data from USART and writing it on eight 7-segment displays.



