In kinds of competitions,timing-score system is indispensable. With the competition rules further perfected,the corresponding timing-score system must be improved well. The device use AT89S51 MCU to achieve timing and scoring functions. This article describes in detail the system hardware and software design process, using the device can be carried out according to the actual situation of the score and time of modification and accurately show, with low power consumption, reliability, security and low cost characteristics. Simple process structure,clear mandate and easy to prepare,debug and modify are applied.
Key words: Single Chip Microcomputer;timer;score;interruption
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