Buzzer sound frequency of testing procedures effect: Because the buzzer in the market to buy back the frequency similar, but different batches and different manufacturers have different lead to a common set of procedures can not be issued by the ideal amount of noise, but mostly not in the best good frequency when the sound becomes very small. This procedure is through the serial port from a PC to manually enter different values get the best parameters sonorous. When using the direct use of this parameter can be replaced by A, the program a detailed English notes, very convenient. (Common values of the 88 or so) Author: Bo waves Time :2010-01-18

蜂鸣器调试.asm

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