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Student-friendly electronics project, digital clock, DIY kit, AT89C2051, precision timing, educational electronics, clock production, time display, alarm setting, 4-bit display.
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0.56 Inch 4 Bit Red Digital Tube Electronic Clock DIY Electronic Production Suite Main chip: AT89C20..
US$4.39
Features:- Low leakage and forward voltage drop, low power loss, high efficiency.- There are total 2..
US$6.04
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