This a campus using VHDL language ring a bell system, which has normal digital clock function, the operation can be achieved through the key switch time display and adjustment, as well as spring and autumn and winter schedule bell switch control.

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..............\cnt100.acf
..............\cnt100.fit
..............\cnt100.hif
..............\cnt100.mmf
..............\cnt100.ndb
..............\cnt100.pin
..............\cnt100.pof
..............\cnt100.rpt
..............\cnt100.scf
..............\cnt100.snf
..............\CNT100.sym
..............\cnt100.vhd
..............\cnt12.acf
..............\cnt12.fit
..............\cnt12.hif
..............\cnt12.mmf
..............\cnt12.ndb
..............\cnt12.pin
..............\cnt12.pof
..............\cnt12.rpt
..............\cnt12.scf
..............\cnt12.snf
..............\CNT12.sym
..............\cnt12.vhd
..............\cnt24.acf
..............\cnt24.fit
..............\cnt24.hif
..............\cnt24.mmf
..............\cnt24.ndb
..............\cnt24.pin
..............\cnt24.pof
..............\cnt24.rpt
..............\cnt24.snf
..............\CNT24.sym
..............\cnt24.vhd
..............\cnt30.acf
..............\cnt30.fit
..............\cnt30.hif
..............\cnt30.mmf
..............\cnt30.ndb
..............\cnt30.pin
..............\cnt30.pof
..............\cnt30.rpt
..............\cnt30.scf
..............\cnt30.snf
..............\CNT30.sym
..............\cnt30.vhd
..............\cnt6.acf
..............\cnt6.fit
..............\cnt6.hif
..............\cnt6.mmf
..............\cnt6.ndb
..............\cnt6.pin
..............\cnt6.pof
..............\cnt6.qsf
..............\cnt6.qws
..............\cnt6.rpt
..............\cnt6.snf
..............\CNT6.sym
..............\cnt6.vhd
..............\cnt6.vhd.bak
..............\cnt60.acf
..............\cnt60.fit
..............\cnt60.hif
..............\cnt60.mmf
..............\cnt60.ndb
..............\cnt60.pin
..............\cnt60.pof
..............\cnt60.rpt
..............\cnt60.snf
..............\CNT60.sym
..............\cnt60.vhd
..............\LIB.DLS
..............\m21a.acf
..............\m21a.fit
..............\m21a.hif
..............\m21a.mmf
..............\m21a.ndb
..............\m21a.pin
..............\m21a.pof
..............\m21a.rpt
..............\m21a.snf
..............\M21A.sym
..............\m21a.vhd
..............\mux2a.acf
..............\mux2a.fit
..............\mux2a.hif
..............\mux2a.mmf
..............\mux2a.ndb
..............\mux2a.pin
..............\mux2a.pof
..............\mux2a.rpt
..............\mux2a.snf
..............\MUX2A.sym
..............\mux2a.vhd
..............\rom.acf
..............\rom.fit
..............\rom.hif
..............\rom.mmf

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