Sent to the buzzer frequency square wave of the experiment through the design of a state machine and divider buzzer sounded " more than a microphone Fat shuttle Rasi multi tone buzzer tone.

23实验二十三：蜂鸣器唱歌
........................\buzzer
........................\buzzer.asm.rpt
........................\buzzer.cdf
........................\buzzer.done
........................\buzzer.dpf
........................\buzzer.fit.eqn
........................\buzzer.fit.rpt
........................\buzzer.fit.smsg
........................\buzzer.fit.summary
........................\buzzer.flow.rpt
........................\buzzer.map.eqn
........................\buzzer.map.rpt
........................\buzzer.map.summary
........................\buzzer.pin
........................\buzzer.pof
........................\buzzer.qpf
........................\buzzer.qsf
........................\buzzer.qws
........................\buzzer.sof
........................\buzzer.tan.rpt
........................\buzzer.tan.summary
........................\buzzer.vhd
........................\buzzer.vhd.bak
........................\......\buzzer.qpf
........................\......\buzzer.qsf
........................\......\buzzer.qws
........................\......\buzzer.vhd
........................\......\cmp_state.ini
........................\......\db
........................\......\..\buzzer.db_info
........................\......\..\buzzer.eco.cdb
........................\......\..\buzzer.sld_design_entry.sci
........................\buzzer_assignment_defaults.qdf
........................\cmp_state.ini
........................\db
........................\..\add_sub_7ph.tdf
........................\..\buzzer.asm.qmsg
........................\..\buzzer.asm_labs.ddb
........................\..\buzzer.cbx.xml
........................\..\buzzer.cmp.cdb
........................\..\buzzer.cmp.hdb
........................\..\buzzer.cmp.kpt
........................\..\buzzer.cmp.logdb
........................\..\buzzer.cmp.rdb
........................\..\buzzer.cmp.tdb
........................\..\buzzer.cmp0.ddb
........................\..\buzzer.cmp2.ddb
........................\..\buzzer.db_info
........................\..\buzzer.eco.cdb
........................\..\buzzer.fit.qmsg
........................\..\buzzer.hier_info
........................\..\buzzer.hif
........................\..\buzzer.lpc.html
........................\..\buzzer.lpc.rdb
........................\..\buzzer.lpc.txt
........................\..\buzzer.map.cdb
........................\..\buzzer.map.hdb
........................\..\buzzer.map.logdb
........................\..\buzzer.map.qmsg
........................\..\buzzer.pre_map.cdb
........................\..\buzzer.pre_map.hdb
........................\..\buzzer.rtlv.hdb
........................\..\buzzer.rtlv_sg.cdb
........................\..\buzzer.rtlv_sg_swap.cdb
........................\..\buzzer.sgdiff.cdb
........................\..\buzzer.sgdiff.hdb
........................\..\buzzer.sld_design_entry.sci
........................\..\buzzer.sld_design_entry_dsc.sci
........................\..\buzzer.syn_hier_info
........................\..\buzzer.tan.qmsg
........................\..\buzzer.tis_db_list.ddb
........................\..\buzzer.tmw_info
........................\..\buzzer_cmp.qrpt
........................\..\prev_cmp_buzzer.asm.qmsg
........................\..\prev_cmp_buzzer.fit.qmsg
........................\..\prev_cmp_buzzer.map.qmsg
........................\..\prev_cmp_buzzer.qmsg
........................\..\prev_cmp_buzzer.tan.qmsg
........................\incremental_db
........................\..............\compiled_partitions
........................\..............\...................\buzzer.root_partition.map.kpt
........................\..............\README

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