yuqu
代码说明：
蜂鸣器音乐演奏，有ppt说明，及实例工程文件。(Music buzzer, a ppt notes, and examples of engineering documents.)
文件列表：
EXPT9_1_SONGER
..............\cmp_state.ini
..............\data1.mif
..............\music.vhd
..............\notetabs.vhd
..............\SONGER.asm.rpt
..............\SONGER.cdf
..............\SONGER.done
..............\SONGER.fit.eqn
..............\SONGER.fit.rpt
..............\SONGER.fit.smsg
..............\SONGER.fit.summary
..............\SONGER.flow.rpt
..............\SONGER.map.eqn
..............\SONGER.map.rpt
..............\SONGER.map.summary
..............\SONGER.pin
..............\SONGER.pof
..............\SONGER.qpf
..............\SONGER.qsf
..............\SONGER.qws
..............\SONGER.sof
..............\SONGER.tan.rpt
..............\SONGER.tan.summary
..............\SONGER.vhd
..............\SONGER_assignment_defaults.qdf
..............\speakera.vhd
..............\tonetaba.vhd
实验91.ppt
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