The curriculum design task is to use MCS 51 series single-chip plus the necessary auxiliary circuits thereby design a regular alarm clock with LCD display. The alarm should have the function: when the timing clock to artificially set a good time, it will sound, and shows you the set alarm time and the current time on the LCD monitor, and can always adjust the time. Let devices have used this lesson: AT89C52 microcontroller, LCD display (LM016L), pull-up resistors (Respack-8), crystal oscillator circuit, reset circuit (with Reset button) and four control keys

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