实验六七三八译码器及应用

实验原理译2n8421BCD210进制或16进制数的转换，可分为驱动LEDLCD两类。 3-8Vcc Vcc 3B A 1A 2Y

楼道灯控制器可用3-8译实现，如下：2.2实验原理共阳连接：8个LED正极连在一起，负极低电平时点亮（50MHz选选选选A~G,Y选选选选A~G,Y4选1选选选选Y选选4选1选选选选4LED041选选选选选Y41选选选选选Y

选选4选1选选选选选选选选选选modulemodulebasic_4to1_mux(inled0);inputwire[7:0]in;//输入端outputwireled0;//输出端always@(in[3:0],in[7:6])2'b00led0in[0002'b01led0in[1012'b10led0in[2102'b11led0in[311in[3]modulemodule yswitch(clk,digit_anode,//portdeclaration,anddefinevariable:disp_numassigndisp_num=16'b1010_1011_1100_1101;//显示"AbCd“dis yDIS Y_0(clk,disp_num,digit_anode,segment);endmodulemodule y(clk,disp_num,digit_anode,//portdeclaration,anddefinevariable:cnt,numalways@(posedgeclk)begin//incrementcase// yeachdigitaccordingto// y0~Faccrodingtomodule yswitch(clk,btn_in,digit_anode,//portdeclaration,anddefinevariable:initialdisp_num<=16'b1010_1011_1100_1101;//dis y"AbCd"always@(posedgebtn_in[0]disp_num30]<disp_num304'd1;//如果按键btn_in[0]被按下，则将对应的要显示的数值加1always@(posedgebtn_in[1]disp_num74]<disp_num744'd1;//如果按键btn_in[1]被按下，则将对应的要显示的数值加1always@(posedgebtn_in[2]disp_num[118]<disp_num[1184'd1;//如果按键btn_in[2]被按下，则将对应的要显示的数值加1always@(posedgebtn_in[3]disp_num[15:12]<disp_num[15:124'd1;//如果按键btn_in[3]被按下，则将对应的要显示的数值加1 yDIS Y_0(clkdisp_numdigit_anodesegment);//4个module y(clk,disp_num,digit_anode,//portdeclaration,anddefinevariable:cnt,numalways@(posedgeclk)begin//incrementcase// yeachdigitaccordingto// y0~Faccrodingtomodulemodule yswitch(clk,btn_in,digit_anode,//portdeclaration,anddefinevariable:disp_num,clk_1ms, (clk,disp_num,digit_anode,(clk,anti_jitterANTI_JETTER(clk,clk_1ms,btn_in,initialdisp_num<=//ydisp_num[3:0]<=disp_num[3:0]disp_num[4]<=disp_num[+++装有ISE的计算机系 1Spartan-III开发 1无装有ISE的计算机系 1Spartan-III开发 1无Spartan33-8modulemoduledecoder38(C,B,A,G,G2A,G2B,inputwireA,B,C,G,G2A,G2B; outputwire[7:0]Y;//输出端 node00(An,A),//1-2译node01(Bn,B),//1-2译node02(Cn,C),//1-2译node03(GnG)使能端构造andnode10(D0,Bn,An),//4个3输入与门，与两个1-2 node_1_1(D1,B_n,A),node12(D2, Anode13(D3, Anornode_1_4(EN,G_n,G2A,G2B);//使能端构造 node20(Y[0],EN,D0,Cn), node21(Y[1],EN,D1,Cnode_2_2(Y[2],EN,D2,node23(Y[3],EN,D3,Cnode24(Y[4],EN,D0,Cnode_2_5(Y[5],EN,D1,Cnode26(Y[6],EN,D2,Cnode27(Y[7],EN,D3,C输出用8个LED。NET”C”LOC=”K13”;//NET”C”LOC=”K13”;//输入端CNET”B”LOC=”K14”;//输入端BNET”A”LOC=”J13”;//输入端ANET”G”LOC=”H14”;//使能端G LOC=”P11”//LED灯 LOC=”P12”//LED灯 LOC=”N12”//LED灯 LOC=”P13”//LED灯 LOC=”N14”//LED灯 LOC=”L12”//LED灯 LOC=”P14”//LED LOC=”K12//LEDmodulemoduleregC;regB;regA;regG;regG2A;regwire[7:0]integer//InstantiatetheUnitUnderTest(UUT)decoder_3_8uut()//InitializeInputsC=0;B=A=G=G2A=G2BG2B=G=G2A=G2B=assignG=0;assignG2A=0;assignG2B=0;assignG=1;assignG2A=1;assignG2B=0;assignG=1;assignG2A=0;assignG2B=1;用3-8译实现楼道灯控制modulemoduletop(inputwireC,B,A,G,G2A,G2B,outputwireY);wire[7:0]decoderdecoder38INSTANCE(C,B,A,G,G2A,G2B,assignY=!(T[1]&T[2]&T[4]&输出用1个LED。 LOC=”K13”;// LOC=”K13”;//输入端C LOC=”K14”;//输入端B LOC=”J13”;//输入端A LOC=”H14”;//使能端G case47 y(inputinputwire[15:0]digit,//显示的数据outputreg3:0node4个数码管的位选outputreg[7:0]segment);//七段+小数点reg[3:0]code=4'b0;reg[15:0]count=always@(posedgeclkbegin上升沿触发case(count[15:14]);;;;;;;;;;;;;;;;node<=4'b1110;codenode<=4'b1110;code<=digit[3:0];node<=4'b1101;code<=digit[7:4];node<=4'b1011;code<=digit[11:8];node<=4'b0111;code<=digit[15:12];default:segment<=8'b countcount1module always@(posedgedisp_num[disp_num[+always@(posedgedisp_num[disp_num[+always@(posedge+modulepbdebounce(inputwireclk,inputmodulepbdebounce(inputwireclk,inputwirebutton,outputregreg[7:0]pbshift;wirepbshift[0]=button;//pbshift[0]赋值if(pbshift==0)moduletimer_1ms(inputmoduletimer_1ms(inputwireclk,outputregreg[15:0]cnt;initialbegincnt[15:0<=0;//设置初值clk_1ms<=0;//设置初值always@(posedgeclk)if(cnt>=25000beginelsebeginUFCNetNet"clk"loc=net"segment[0]"loc="E14";net"segment[1]"loc="G13";net"segment[2]"loc="N15";net"segment[3]"loc="P15";net"segment[4]"loc="R16";net"segment[5]"loc="F13";net"segment[6]"loc="N16";net"segment[7]"loc="P16";net"digit_anode[0]"loc="D14";net"digit_anode[1]"loc="G14";net"digit_anode[2]"loc="F14";net"digit_anode[3]"loc="E13“;net"btn_in[0]"loc="L14";net"btn_in[1]"loc="L13";net"btn_in[2]"loc="M14";net"btn_in[3]"loc