文件名称:shuma
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7段数码是纯组合电路，通常的小规模专用IC，如74或4000系列的器件只能作十进制BCD码译码，然而数字系统中的数据处理和运算都是2进制的，所以输出表达都是16进制的，为了满足16进制数的译码显示，最方便的方法就是利用VHDL译码程序在FPGA或CPLD中实现。本项实验很容易实现这一目的。例6-1作为7段BCD码译码器的设计，输出信号LED7S的7位分别接如图6-1数码管的7个段，高位在左，低位在右。例如当LED7S输出为 \"1101101\" 时，数码管的7个段：g、f、e、d、c、b、a分别接1、1、0、1、1、0、1，接有高电平的段发亮，于是数码管显示“5”。
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压缩包 : 23825753shuma.rar 列表 shuma\Block1.bdf shuma\db\mux_1hc.tdf shuma\db\mux_hfc.tdf shuma\db\prev_cmp_ym4_1.asm.qmsg shuma\db\prev_cmp_ym4_1.fit.qmsg shuma\db\prev_cmp_ym4_1.map.qmsg shuma\db\prev_cmp_ym4_1.sim.qmsg shuma\db\prev_cmp_ym4_1.tan.qmsg shuma\db\wed.wsf shuma\db\ym4_1.(0).cnf.cdb shuma\db\ym4_1.(0).cnf.hdb shuma\db\ym4_1.asm.qmsg shuma\db\ym4_1.cbx.xml shuma\db\ym4_1.cmp.bpm shuma\db\ym4_1.cmp.cdb shuma\db\ym4_1.cmp.ecobp shuma\db\ym4_1.cmp.hdb shuma\db\ym4_1.cmp.logdb shuma\db\ym4_1.cmp.rdb shuma\db\ym4_1.cmp.tdb shuma\db\ym4_1.cmp0.ddb shuma\db\ym4_1.cmp_bb.cdb shuma\db\ym4_1.cmp_bb.hdb shuma\db\ym4_1.cmp_bb.logdb shuma\db\ym4_1.cmp_bb.rcf shuma\db\ym4_1.dbp shuma\db\ym4_1.db_info shuma\db\ym4_1.eco.cdb shuma\db\ym4_1.fit.qmsg shuma\db\ym4_1.fnsim.cdb shuma\db\ym4_1.fnsim.hdb shuma\db\ym4_1.fnsim.qmsg shuma\db\ym4_1.hier_info shuma\db\ym4_1.hif shuma\db\ym4_1.map.bpm shuma\db\ym4_1.map.cdb shuma\db\ym4_1.map.ecobp shuma\db\ym4_1.map.hdb shuma\db\ym4_1.map.logdb shuma\db\ym4_1.map.qmsg shuma\db\ym4_1.map_bb.cdb shuma\db\ym4_1.map_bb.hdb shuma\db\ym4_1.map_bb.logdb shuma\db\ym4_1.pre_map.cdb shuma\db\ym4_1.pre_map.hdb shuma\db\ym4_1.psp shuma\db\ym4_1.pss shuma\db\ym4_1.rtlv.hdb shuma\db\ym4_1.rtlv_sg.cdb shuma\db\ym4_1.rtlv_sg_swap.cdb shuma\db\ym4_1.sgdiff.cdb shuma\db\ym4_1.sgdiff.hdb shuma\db\ym4_1.signalprobe.cdb shuma\db\ym4_1.sim.cvwf shuma\db\ym4_1.sim.hdb shuma\db\ym4_1.sim.qmsg shuma\db\ym4_1.sim.rdb shuma\db\ym4_1.sld_design_entry.sci shuma\db\ym4_1.sld_design_entry_dsc.sci shuma\db\ym4_1.syn_hier_info shuma\db\ym4_1.tan.qmsg shuma\db shuma\prev_cmp_ym4_1.qmsg shuma\ym4_1.asm.rpt shuma\ym4_1.bsf shuma\ym4_1.done shuma\ym4_1.fit.rpt shuma\ym4_1.fit.smsg shuma\ym4_1.fit.summary shuma\ym4_1.flow.rpt shuma\ym4_1.map.rpt shuma\ym4_1.map.summary shuma\ym4_1.pin shuma\ym4_1.pof shuma\ym4_1.qpf shuma\ym4_1.qsf shuma\ym4_1.qws shuma\ym4_1.sim.rpt shuma\ym4_1.sof shuma\ym4_1.tan.rpt shuma\ym4_1.tan.summary shuma\ym4_1.vhd shuma\ym4_1.vhd.bak shuma\ym4_1.vwf shuma