1. Way to trigger the use of digital programming, so that the issue of audio computer and play "two tigers" of the music. Through access to relevant information, a better understanding of procedures for the direct control of I/O mode and digital control to trigger the sound works. Music is a different tone frequency and the beat of the pulse to control the frequency and duration of the procedure is the key to the preparation of music. Notes the basis of known frequency table, given the frequency of musical scales based minim duration of 0.5 seconds (50* 10ms), 50 as a value of 2 shot, given the timetable beat music Programming and debug through. 2. Further study the use of sound methods have a timer so that the computer to play music (such as "two tigers", etc.).

汇编课程设计.doc

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