1, the use of the timer CPU time, the design of an electronic clock, so remember a time when seven-segment LED output of the following format: XX XX XX from left to right are: hours, minutes, seconds 2, the use of the buzzer function to achieve whole point of time 3, the use of AN1 ~ AN4 implementation, the point addition and subtraction, respectively

C51 Microcontroller Course Desig.txt

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