Search - digital tube clock
DIY digital clock kit, 4-bit red tube, AT89C2051 microcontroller, precision timekeeping, adjustable alarm, student electronics project, FR-4 PCB, 8:00-20:00 time display, calibration, easy power supply.
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0.56 Inch 4 Bit Red Digital Tube Electronic Clock DIY Electronic Production Suite Main chip: AT89C20..
US$4.39
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