8-digit digital tube & 5-digit independent button expansion board
8-bit dynamic scanning digital tube with 138 decoding
Red highlights 11 I/O lines to control 8-digit digital tube
Features:
-Bright digital tube for clear display
-Adopt 74HC138 as bit drive, save I/O port, and performance is more stable
-Standard interface for expansion on various development boards
-Fixed screw holes for easy installation
-Suitable for various platforms such as 51/AVR/AVR/ARM
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