Implemented by DE0 board telephone billing, basic function: to set the call mode, you can initiate credit balance, toggle switch into the talk mode, and deduct the cost of a call based on call time and the corresponding mode. Call talk time and can be displayed by switching credit balance, and mute. Compression bag has a detailed description of WORD documents, including the waveform simulation and DE0 pin function description.

电话计费器
..........\DE0开发板使用手册.pdf
..........\last
..........\....\alarm.vwf
..........\....\Chain1.cdf
..........\....\charge.vwf
..........\....\clock.vwf
..........\....\db
..........\....\..\prev_cmp_zlh.asm.qmsg
..........\....\..\prev_cmp_zlh.fit.qmsg
..........\....\..\prev_cmp_zlh.map.qmsg
..........\....\..\prev_cmp_zlh.qmsg
..........\....\..\prev_cmp_zlh.sim.qmsg
..........\....\..\prev_cmp_zlh.sta.qmsg
..........\....\..\wed.wsf
..........\....\..\zlh.asm.qmsg
..........\....\..\zlh.asm_labs.ddb
..........\....\..\zlh.cbx.xml
..........\....\..\zlh.cmp.bpm
..........\....\..\zlh.cmp.cdb
..........\....\..\zlh.cmp.ecobp
..........\....\..\zlh.cmp.hdb
..........\....\..\zlh.cmp.kpt
..........\....\..\zlh.cmp.logdb
..........\....\..\zlh.cmp.rdb
..........\....\..\zlh.cmp_merge.kpt
..........\....\..\zlh.cuda_io_sim_cache.31um_ff_1200mv_0c_fast.hsd
..........\....\..\zlh.cuda_io_sim_cache.31um_tt_1200mv_85c_slow.hsd
..........\....\..\zlh.db_info
..........\....\..\zlh.eco.cdb
..........\....\..\zlh.eds_overflow
..........\....\..\zlh.fit.qmsg
..........\....\..\zlh.hier_info
..........\....\..\zlh.hif
..........\....\..\zlh.lpc.html
..........\....\..\zlh.lpc.rdb
..........\....\..\zlh.lpc.txt
..........\....\..\zlh.map.bpm
..........\....\..\zlh.map.cdb
..........\....\..\zlh.map.ecobp
..........\....\..\zlh.map.hdb
..........\....\..\zlh.map.kpt
..........\....\..\zlh.map.logdb
..........\....\..\zlh.map.qmsg
..........\....\..\zlh.map_bb.cdb
..........\....\..\zlh.map_bb.hdb
..........\....\..\zlh.map_bb.logdb
..........\....\..\zlh.pre_map.cdb
..........\....\..\zlh.pre_map.hdb
..........\....\..\zlh.rtlv.hdb
..........\....\..\zlh.rtlv_sg.cdb
..........\....\..\zlh.rtlv_sg_swap.cdb
..........\....\..\zlh.sgdiff.cdb
..........\....\..\zlh.sgdiff.hdb
..........\....\..\zlh.sim.cvwf
..........\....\..\zlh.sim.hdb
..........\....\..\zlh.sim.qmsg
..........\....\..\zlh.sim.rdb
..........\....\..\zlh.sld_design_entry.sci
..........\....\..\zlh.sld_design_entry_dsc.sci
..........\....\..\zlh.sta.qmsg
..........\....\..\zlh.sta.rdb
..........\....\..\zlh.sta_cmp.6_slow_1200mv_85c.tdb
..........\....\..\zlh.syn_hier_info
..........\....\..\zlh.tiscmp.fast_1200mv_0c.ddb
..........\....\..\zlh.tiscmp.slow_1200mv_0c.ddb
..........\....\..\zlh.tiscmp.slow_1200mv_85c.ddb
..........\....\..\zlh.tis_db_list.ddb
..........\....\..\zlh.tmw_info
..........\....\..\zlh_global_asgn_op.abo
..........\....\incremental_db
..........\....\..............\compiled_partitions
..........\....\..............\...................\zlh.root_partition.cmp.atm
..........\....\..............\...................\zlh.root_partition.cmp.dfp
..........\....\..............\...................\zlh.root_partition.cmp.hdbx
..........\....\..............\...................\zlh.root_partition.cmp.kpt
..........\....\..............\...................\zlh.root_partition.cmp.logdb
..........\....\..............\...................\zlh.root_partition.cmp.rcf
..........\....\..............\...................\zlh.root_partition.map.atm
..........\....\..............\...................\zlh.root_partition.map.dpi
..........\....\..............\...................\zlh.root_partition.map.hdbx
..........\....\..............\...................\zlh.root_partition.map.kpt
..........\....\..............\README
..........\....\zlh.asm.rpt
..........\....\zlh.done
..........\....\zlh.dpf
..........\....\zlh.eda.rpt
..........\....\zlh.fit.rpt
..........\....\zlh.fit.smsg
..........\....\zlh.fit.summary
..........\....\zlh.flow.rpt
..........\....\zlh.map.rpt
..........\....\zlh.map.smsg
..........\....\zlh.map.summary
..........\....\zlh.pin
..........\....\zlh.qpf
..........\....\zlh.qsf
..........\....\zlh.qws
..........\....\zlh.sim.rpt
..........\....\zlh.sof

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