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ID:8803597
大小:175.50 KB
页数:3页
时间:2018-04-08
《用vhdl语言实现的数码管显示程序(包含动态和静态)》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、libraryieee;useieee.std_logic_1164.all;useieee.std_logic_unsigned.all;entityshumaguanisport(clk:instd_logic;x:outstd_logic_vector(7downto0);seg:outstd_logic_vector(7downto0));endentity;architecturebehaveofshumaguanissignalclk1:std_logic;beginprocess(clk)variablecount:integer
2、range0to;beginif(clk'eventandclk='1')thenif(count=)then--动态--if(count=1000)then--静态count:=0;clk1<=notclk1;elsecount:=count+1;endif;endif;endprocess;process(clk1)variablea:integerrange1to8;beginif(clk1'eventandclk1='1')thenif(a=8)thena:=1;elsea:=a+1;endif;endif;caseaiswhen1=>
3、x<="";seg<="";when2=>x<="";seg<="";when3=>x<="";seg<="";when4=>x<="";seg<="";when5=>x<="";seg<="";when6=>x<="";seg<="";when7=>x<="";seg<="";when8=>x<="";seg<="";whenothers=>null;endcase;endprocess;endbehave;内部资料仅供参考9JWKffwvG#tYM*Jg&6a*CZ7H$dq8KqqfHVZFedswSyXTy#&QA9wkxFyeQ^!d
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