The data acquisition circuit is composed of chip 89C52 and 8254. External measuring signal at interrupt mode triggers 89c52 to read number in 8254 counter.
由89c52和8254组成数据处理电路。外部测量信号以外部中断方式触发89c52读取8254计数。
The data acquisition circuit is composed of chip 89C52 and 8254. External measuring signal at interrupt mode triggers 89c52 to read number in 8254 counter.
由89c52和8254组成数据处理电路。外部测量信号以外部中断方式触发89c52读取8254计数。
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