




版權(quán)說明:本文檔由用戶提供并上傳,收益歸屬內(nèi)容提供方,若內(nèi)容存在侵權(quán),請進(jìn)行舉報或認(rèn)領(lǐng)
文檔簡介
VHDL數(shù)字時鐘設(shè)計
一、實驗?zāi)康?
進(jìn)一步練習(xí)VHDL語言設(shè)計工程的建立與仿真的環(huán)節(jié)和方法、熟悉VHDL
語言基本設(shè)計實體的編寫方法。同時,在已有知識的基礎(chǔ)上,簡樸綜合編寫程序,仿制簡
樸器械。
二、實驗環(huán)境:
PC個人計算機、WindowsXP操作系統(tǒng)、QuartusII集成開發(fā)環(huán)境軟件。
三、設(shè)計規(guī)定:
運用VHDL語言編寫一個數(shù)字鐘,具體規(guī)定:
1.具有時、分、秒計數(shù)的十進(jìn)制數(shù)字顯示功能,以24小時循環(huán)計時。
2.具有手動調(diào)節(jié)小時,分鐘的功能。
。3.具有鬧鐘的功能,可以在設(shè)定的鬧鐘時間發(fā)出鬧鈴聲。
四、實驗環(huán)節(jié):
1.定義輸入輸出信號量
£?port(
elk:instd_logic;-時鐘
speak:outstd_logic;一一鈴
。dout:outstd_1ogic_vector(7downto0);---晶體管顯示
setc1k:instd_logic_vector(2downto0);---操作按鈕
odl,d2,d3,d4,d5,d6:outstd_logic);--—六個晶體管
2.定義結(jié)構(gòu)體中的信號量
signa1sei:std_logic_vector(2downto0);
signalhou1:std_1ogic_vector(3downto0);--時分秒的個位和十位
signalhou2:std__logic_vector(3downto0);
signa1min1:std_1ogic_vector(3downto0);
signa1min2:std_logic_vector(3downto0);
signalsethl:std」ogic_vector(3downto0);
signa1seth2:std_1ogic_vector(3downto0);
signa1setmkstd_Iogic_vector(3downto0);
signa1setm2:std_1ogic_vector(3downto0);
signalseel:std」ogic_vector(3downto0);
signalsec2:std_logic_vector(3downto0);
signalh1:std_logic_vector(3downto0);
signalh2:std_logic_vector(3downto0);
signa1m1:std_1ogic_vector(3downto0);
signalm2:std_logic_vector(3downto0);
signalsi:std_1ogic_vector(3downto0);
signals2:std_logic_vector(3downto0);
signalsph1,sph2,spml,spm2,spsi,sps2:std_1ogic_vector(3downto0);
signalcount_sec:std_1ogic_vector(9downto0);
signalsec_co?:std_logic;
signalcol,co2,co3,co4:std」ogic;-----進(jìn)位
signalswitch:std」ogic_vector(1downto0);--表達(dá)狀態(tài)
3.分頻模塊
用來定義秒count_sec用來計時鐘個數(shù),當(dāng)count_sec=時,及得到1Hz信號。代碼如
下:
process(elk)is。。一defineasecond
begin
sif(clk*eventandclk='l')then
if(count__sec=,u,)then
00countsec<=
sec_co<=/I,;
eIse
count_sec<=count_sec+'1
。sec_co<=*0
endif;
endif;
endprocess;<>
4.時鐘正常走時模塊
該模塊使用6個進(jìn)程實現(xiàn),分別為秒個位計時、秒十位計時、分個位計時、分十位計時、
時個位計時、時十位計時。
process(sec_co)is。。-----—一秒個位
begin
ifswitch=",00Mthen■■正常狀態(tài)
。ifsec_co=Tihen
。ifsec2=M1001Mthen
sec2<="0000”;
。coi<=zr;
。e1se
。sec2<=sec2+,11;
colV='0';
。endif;
endif;
elsifswitch=H01"then。--調(diào)時狀態(tài)
sec2<=H0000”;
endif;
endprocess;
process(col)is。一一--一秒十位
begin
ifswitch="00"then
ifcoTeventandcol=,「then
oif(secl=n0101M)then
^secl<="0000”;
oco2<=*1*;
?else
oosec1<=secl+f1*;
00co2V='0';
endif;
endif;
elsifswitch="01nthen
osecl<=uOOOOH;
endif;
endprocess;
process(col,co2)is--——---分鐘個位
begin
ifswitch=“00“then
co2*eventandco2=*1'then
oifmin2="1001"then
omin2<=M0000”;
co3<='1r;
else
omin2<=min2+'1';
co3<='0,;
endif;
?endif;
elsifswitch=nOr'then
min2<=setm2;
endif;
endprocess;
process(co3)is-------------------分鐘十位
begin
ifswitch=“00”then
ifco3=*rthen
ifminl=n0101nthen
minl<="0000”;
,z
eCo4<=1;
eIse
minl<=minl+'l';
。co4V='0\
oendif;
endif;
e1sifswitch="01uthen
minl<=setml;
endif;
endprocess;
process(co4)?!鲆灰灰恍r
begin
ifswitch=n00"then
ifco4=rthen
。if(houl=nOO10")then。-一小時十位為2時,個位滿3進(jìn)一
。if(hou2=H0011")then
。。。hou2<=n0000”;
houl<=M0000”;
。。<?else
ou2<=hou2+'1';
J?endif;
o?else??■一小時十位為0或1,個位滿9進(jìn)一
。if(hou2=01001")then
。。hou2<=nOOOOn;
houl<=houl+,l,;
else
hou2<=hou2+'1';
。endif;
eendif;
aendif;
elsifswitch=n01"then
。houl<=sethl;
hou2<=seth2:
endif;
endprocess;
5.調(diào)時模塊
該進(jìn)程用來控制時鐘狀態(tài),switch為“00”時正常顯示時間,為“01”時是進(jìn)
行調(diào)時,
為“10”時是設(shè)立鬧鐘時間。代碼如下:
process(setc1k(0))is。
begin
if(setcIk(0)zeventandsetclk(0)=T)then
if(switch=n10n)then
,,,,
switch<=00;
eIse
switch<=switch+'1
endif;
endif;
endprocess;
process(setclk(2),switch,setcIk(1))is
begim。--setclk(1)為1調(diào)分
if(switch="01"andsetclk(1)=,1/)then
if(setclk(2)'eventandsetc1k(2)=「)then
。if(setm2=1001")then
。setm2<=uOOOO";
if(setml=n0101")then
setm1<=n0000H;
。e1se
。。setml<=setml+'l';
。endif;
else
setm2<=setm2+,l1;
endif;
endif;
endif;
endprocess;
process(setc1k(2),switch,setclk(1))is
begin-setcIk(1)為0調(diào)時
if(switch=M01Handsetc1k(l)='0')then
if(setclk(2)'eventandsetclk(2)=r1r)then
。。if(seth1=M0010")then
。。if(seth2=n00ir')then
8seth1<=H0000n;
。。seth2<=n0000M;
。eIse
。。?seth2<=seth2+*1*;
o。endif;
。eIse
。if(seth2=H1001n)then
o。。sethl<=seth1+T;
“seth2<=H0000u;
o。else
*oseth2<=seth2+*1';
endif;
?endif;
endif;
endif;
endprocess;
,6.鬧鐘模塊
該模塊由3個小模塊組成,分別為設(shè)立鬧鐘時間、判斷鬧鐘時間是否到達(dá)以及鬧鈴聲音模
塊。
。(1)設(shè)立鬧鐘時間模塊
該進(jìn)程用于設(shè)立鬧鐘時間。
信號量switch為410'時,表達(dá)設(shè)立鬧鐘時間;。
if(switch="10")then-----調(diào)鬧鐘時,顯示鬧鐘設(shè)立時間
ifse1="000”then
odl<='0';
?casesph1is
。when0000',=>dout<=,,l1000000";
。when),0001',=>dout<=,,l1111001n;
owhen"00100=>dout<=n10100100H;
owhenothers=>dout<="XXXXXXXXM;
endcase;
elsifsei=',001,'then
od2<='0';
?casesph2is
whenuOOOOM=>dout<="11000000M;
owhen,,000r,=>dout<=Mlll1100ln;
owhen”0010H=>dout<=H10100100H;
>when0001ln=>dout<=nl01100000;
。when"0100"=>dout<=010011001";
gwhen”0101,,=>dout<=H10010010";
whenn0110"=>dout<=*'l0000010H;
whenH0111°=>dout<=M11111000”;
◎when01000"=>dout<="10000000";
when*'1001',=>dout<=',10010000,';
whenothers=>dout<=uXXXXXXXX";
?endcase;
elsifsel="010"then
8d3v='O';
casespm1is
when"0000"=>dout<=u11000000H;
owhen"000l"=>dout<="11111001
when,10010,'=>dout<=,,10100100”;
。when"0011n=>dout<=<*10110000";
owhen"0100°=>dout<=nl0011OOI
。。when“0101”=Adout<="10010010M;
3whenothers=>dout<=nXXXXXXXX";
?endcase;
?e1sifsel="011"then
od4<=,0,;
6casespm2is
whenn0000n=>dout<="11000000”;
owhen,'0001',=>dout<=011111001”;
whenM0010"=>dout<=M10100100";
henH0011H=>dout<=u10110000M;
gwhen,,0100,'=>dout<=Hl001100
zhen“0101”=>doutv="10010010*1;
when"Oil0H=>dout<=n10000010”;
owhenM01ir'=>dout<=n11111000*';
when"1000"=>dout<=M10000000”;
owhen”1001M=>dout<=n10010000”;
whenothers=>dout<=°XXXXXXXX;
oendcase;
eIsifse1=H100nthen
d5<='O';
casespsiis
。when"0000"=>dout<="ll000000";
。?when"0001"=>dout<="11111001";
。。when"0010"=>dout<="10100100";
"when"0011"=>dout<="10110000";
。?when"0100"=>dout<="10011001
。。?when"0101"=>dout<="10010010
?whenothers=>dout<="XXXXXXXX";
endcase;
oelsifsel="l01"then
d6<=,0';
。casesps2is
?when"0000"=>dout<="11000000";
。when"0001"=>dout<="11111001";
。?when"0010"=>dout<="10100100";
。when"00ll"=>dout<="10110000";
?when"0100"=>dout<="l0011001";
。。when"0101"=>dout<="10010010";
?when"0110"=>dout<="10000010";
when"0lll"=>dout<="11111000";
。?when"1000"=>dout<="10000000";
。?when"1001"=>dout<="10010000";
。whenothers=>dout<="XXXXXXXX";
endcase;
endif;。
?(2)鬧鈴聲音模塊
通過度頻產(chǎn)生蜂鳴,即發(fā)出鬧鈴聲音。
process(switch)is^——------鬧鈴
begin。設(shè)立鬧鈴時秒歸零
ifswitch=u10"then
sps1<="0000”;
sps2<=u0000";
endif;
endprocess;
process(switch,setc1k(2),setcIk(1))is
begin
if(switch=H10Handsetclk(l)-11)then
if(setelk(2)reventandsetclk(2)=,l')then
if(spm2=n1001H)then
spm2<=H0000”;
ooif(spm1=n0101")then
。spm1<="0000”;
else
spml<=spml+'l';
endif;
else
spm2<=spm2+'1';
?endif;
endif;
endif;
endprocess;
process(switch,setc1k(2),setc1k(1))is
begin
。if(switch=*'10"andsetclk(l)='O,)then
。if(setclk(2)*eventandsetc1k(2)=,r)then
if(sphl="0010")then
eif(sph2=n0011°)then
s8。sphl<=M0000";
。。sph2<='10000n;
*else
sph2<=sph24-T;
?。endif;
eelse
。。if(sph2=H100r')then
3sph2<=H0000";
0°0sphl<=sphl+,r;
0。e1se
e。。。。sph2<=sph2+T;
e。endif;
egendif;
endif;
。endif;
endprocess;
process(clk,sphl,sph2,spml,spm2,hou1,hou2,min1,min2)is
。begin
if(sphl=hou1andsph2=hou2andspm1=min1andspm2=min2)t
hen
。speak<=clk;
else
8。speak<='0';
。endif;
endprocess;
7.數(shù)碼管顯示模塊
(1)選擇時間顯示
process(key1,key2,change)
begin
if(key1=z0z)and(key2=9O')then
“osec_0<=sec_00;
?sec_l<=sec_11;
omin_0<=min_00;
gmin_l<=min_ll;
。hour_1<=hour_11;
“hour_0<=hour_00;
。eIsif(key1='1f)and(key2=rO')then
sec_0<=sec__000;
ssec_l<=sec_111;
e,min_0<=min_000;
Q<>min_l<=min_111;
ghour_0<=hour_000;
hour_l<=hour_111;
oe1sif(keyl=,0,)and(key2=/l*)then
。sec_0<=sec_0000;
。6sec_1<=sec_llll;
gmin_0<=min_0000;
?<>min_1<=min_1111;
。hour_0<=hour_0000;
。hour_1<=hour_llll;
oendif;
?endprocess;
(2)數(shù)碼管時間顯示
ifse1="000”then
dl<='0';
ocaseh1is
whenn0000H=>dout<=nl1000000";
“whenn0001u=>dout<=H11111001,f;
o。when"0010n=>dout<="10100100”;
?whenothers=>dout<=*'XXXXXXXX
oendcase;
oelsifsel=M001Hthen
d2v='0>;
?caseh2is
。whenu0000'*=>dout<=M11000000";
whenu0001M=>dout<="11111001u;
when"0010u=>dout<=n10100100H;
。whenM001lu=>dout<=u10110000";
owhen00100"=>dout<=n10011001*1;
。whenn0101n=>dout<=n10010010”;
。。whenH0110"=>dout<="10000010";
owhenH011lu=>dout<="lllll000";
owhen"1000n=>dout<="10000000";
o。whenH1001n=>dout<="100100000;
“whenothers=>dout<=HXXXXXXXXH;
“endcase;
。elsifsel="010Hthen
。d3<=z01;
。casem1is
的when"0000"=>dout<=u11000000”;
。^whenH0001"=>dout<='(11111001";
when"0010u=>dout<=H10100100";
。,when"0011"=>dout<="10110000”;
“when”0100u=>dout<=H10011001H;
,owhen"010l"=>dout<=n10010010”;
whenothers=>dout<="XXXXXXXX”;
ooendcase;
elsifsel=HOil"then
8d4<='0';
casem2is
“when”0000H=>dout<="11000000n;
。when-0001K=>dout<=nl1111001”;
,when“0010”=>dout<="l0100100”;
◎when"0011”=>dout<="10110000";
when,,0100,,=>dout<=010OllOOl',;
。when0010l”=>doutv="10010010M;
“when”0110n=>dout<=n10000010”;
gowhen"011l"=>dout<=”11111000";
“when”1000”=>dout<="10000000”;
whenn1001"=>dout<=nl0010000M;
gwhenothers=>dout<="XXXXXXXX
?endcase;
elsifse1=nl00Mthen
d5<=<0';
“casesiis
o^when"0000n=>dout<=u11000000
◎when"0001n=>dout<=011111001n;
ahen"0010H=>dout<=M10100100”;
owhen"00Hu=>dout<=H10110000
。when"0100"=>dout<=u10011001”;
“?whenn0101M=>dout<=n10010010”;
°。whenothers=>dout<=MXXXXXXXXK;
gendcase;
e1sifse1=n101nthen
8d6v='O';
ocases2is
when"0000n=>dout<=nl1000000M;
owhen000r'=>dout<=H11111001M;
awhen"0010n=>dout<=n10100100
。when,100ir,=>dout<=,,10110000”;
。owhenn0100"=>dout<="10011001,r;
。when”010ln=>dout<=n10010010”;
“whenM0110"=>dout<=u10000010";
s<?when”0111M=>dout<=H111110000;
owhen“1000”=>doutv="10000000n;
。->whenH100r'=>dout<=n10010000'1;
。whenothers=>dout<="XXXXXXXX";
。endcase;
endif;
五、實驗結(jié)果分析總結(jié):
該程序基本實現(xiàn)了數(shù)字時鐘的基本功能,可以正常走時,并且可以校正時間,還可以
進(jìn)行鬧鐘設(shè)立。
通過這次VHDL課程設(shè)計,我學(xué)到了很多,對于原本掌握的不好的數(shù)字邏輯相關(guān)知
識,在課程設(shè)計具體實踐中有了很深刻的結(jié)識,在對于QuartusII的操作上也有很大
的提高,增長了操作的純熟限度,現(xiàn)在我已有信心做任何的設(shè)計課題。
在編程中還碰到其他一些小問題,有好多都是由于不夠細(xì)心,不夠嚴(yán)謹(jǐn)導(dǎo)致的,通過編
程,我會一步步養(yǎng)成一個好的編程習(xí)慣,盡量避免一些不必要的錯誤,一步步提高自己。
在此后的學(xué)習(xí)中,我還需要不斷學(xué)習(xí),不斷鍛煉自己。
六、附:源代碼
libraryieee;
useieee.std_logic_l164.all;
useieee.std_logic_unsigned.a11;
entityclockis
叩ort(
3clk:instd_logic;?一時鐘
speak:outstd_1ogic;一鈴
dout:outstd_logic_vector(7downto0);---晶體管顯示
esetclk:instd_logic_vector(2downto0);---操作按鈕
d1,d2,d3,d4,d5,d6:outstd_logic);---六個晶體管
endentityclock;
architectureoneofclockis
signalsei:std_1ogic_vector(2downto0);
signa1hou1:std_logic_vector(3downto0);--時分秒的個位和十位
signalhou2:std_logic_vector(3downto0);
signalmini:std」ogic_vector(3downto0);
signalmin2:std_1ogic_vector(3downto0);
signalseth1:std_logic_vector(3downto0);
signalseth2:std_1ogic_vector(3downto0);
signalsetml:std_logic_vector(3downto0);
signa1setm2:std_logic_vector(3downto0);
signa1sec1:std_1ogic_vector(3downto0);
signa1sec2:std_1ogic_vector(3downto0);
signa1h1:stdjogic_vector(3downto0);
signa1h2:std_logic__vector(3downto0);
signa1ml:std_logic_vector(3downto0);
signa1m2:std」ogic_vector(3downto0);
signa1sl:std_logic_vector(3downto0);
signals2:std_1ogic_vector(3downto0);
signa1sphl,sph2,spm1,spm2,spsl,sps2:std.c_vector(3downto0);
signa1count_sec:std」ogic_vector(9downto0);
signalsec_co:std_1ogic;
signalcol,co2,co3,co4:std_1ogic;■■進(jìn)位
signalswitch。:std_logic_vector(1downto0);--表達(dá)狀態(tài)
begin
process(elk)is--defineasecond
begin
。if(clk'eventandcIk-11)then
。if(count_sec="")then
count_sec<=,H,;
。osec_co<-I*;
eIse
count_sec<=count_sec+'1';
sec_co<=,0,;
endif;
endif;
endprocess;
process(sec_co)is。一一一?一-----一秒個位
begin
ifswitch="00"then。--正常狀態(tài)
。ifsec_co='l'then
。。ifsec2=nl001Mthen
^sec2<="0000H;
。coi<=,r;
8e1se
o*?sec2<=sec2+,l,;
08COl<='O';
endif;
oendif;
elsifswitch=M01nthen一調(diào)時狀態(tài)
sec2<=n0000”;
endif;
endprocess;
process(col)is??——--------秒十位
begin
ifswitch=1100"then
?ifcol*eventandco1=Tthen
”if(sec1="0101H)then
eoseel<="0000n;
□co2<-r;
??else
“secl<=secl+T;
。。co2<='0,;
。endif;
?endif;
elsifswitch="01"then
seel<="0000”;
endif;
endprocess;
process(co1,co2)is......--一分鐘個位
begin
ifswitch=n00"then
“fco2'eventandco2=*1rthen
“ifmin2="1001"then
。min2<="0000,';
8OCO3<='1';
^else
min2<=min2+'l';
。co3<='0,;
空ndif;
?endif;
elsifswitch=MO1"then
min2<=setm2;
endif;
endprocess;
process(co3)is-------——分鐘十位
begin
ifswitch="00"then
fco3=1'then
“fmini="0101nthen
如mini""0000”;
3?>co4<=,1';
else
。omin1<=minl4-'1
°。co4<=,0,;
。endif;
eendif;
elsifswitch="01"then
minl<=setml;
endif;
endprocess;
process(co4)6-----一小時
begin
ifswitch=M00uthen
。ifco4=,1'then
“if(hou1=M0010")then-小時十位為2時,個位滿3進(jìn)一
。if(hou2="0011M)then
。。。由0u2<=H0000n;
^houl<=n0000n;
6else
。ohou2<=hou2+'r;
“endif;
else。。。一-小時十位為0或1,個位滿9進(jìn)一
。。if(hou2=n1001H)then
hou2<='*0000
。。houl<=houl+*r;
。e1se
8ghou2v=hou2+'1';
◎endif;
endif;
endif;
elsifswitch="01"then
ohou1<=seth1;
hou2<=seth2;
endif;
endprocess:
process(setclk(O))is?!鲆豢刂茣r鐘狀態(tài),0。正常,01調(diào)時,10鬧鐘
begin
if(setclk(0/eventandsetclk(0)=,lf)then
aif(switch=H10n)then
8oswitch<="00";
ooe1se
。switch<=switch+'l';
eendif;
6endif;
endprocess;
process(setclk(2),switch,setclk(1))is
begin。-setclk(1)為1調(diào)分
if(switch=n01"andsetclk(1)=T)then
if(setc1k(2)reventandsetclk(2)-T)then
。if(setm2=M1001")then
。setm2<=n0000";
geif(setml="0101H)then
。setml<=,,0000,,;
。oelse
osetml<=setml+,r;
。endif;
else
osetm2<=setm2+T;
gendif;
sendif;
endif;
endprocess;
process(setc1k(2),switch,setelk(1))is
begin<>--setclk⑴為0調(diào)時
?if(switch="01"andsetclk(1)='0')then
eif(setclk(2)'eventandsetc1k(2)-11)then
。if(seth1="0010°)then
。。if(seth2=H0011H)then
8sethlv="0000”;
。oseth2<="0000”;
gelse
。oseth2<=seth2+11*;
g>endif;
gelse
if(seth2=nlOOI”)then
osethl<=sethl+'r;
。oseth2<=n0000n;
odelse
gseth2<=seth2+'l';
。。endif;
、endif;
。endif;
endif;
endprocess;
process(switch)is。o---一一鬧鈴
begino-設(shè)立鬧鈴時秒歸零
oifswitch=n10Mthen
spsl<="0000”;
。sps2<="0000”;
?endif;
endprocess;
process(switch,setc1k(2),setclk(1))is
begin
?if(switch="10"andsetc1k(1)=*r)then
if(setclk(2)'eventandsetclk(2)=*1*)then
s“f(spm2="1001")then
。。spm2<=n0000n;
nn
川if(spml=0101)then
。。。spml<=,'0000”;
o笛Ise
gspm1<=spml+z1';
3ndif;
。eIse
sspm2<=spm2+,r;
gendif;
oendif;
?endif;
endprocess;
process(switch,setclk(2),setelk(1))is
begin
if(switch=n10"andsetclk(1)=,0,)then
if(setclk(2)'eventandsetclk(2)='r)then
if(sphl=H0010n)then
H
doqf(sph2=0011")then
gosphl<=nOO00
。。sph2<=H0000”;
eIse
?asph2<=sph2+T;
。怕ndif;
??誌se
8oif(sph2="1001")then
。sph2<=n0000n;
。。。sphl<=sphl+*1';
。oeIse
。。sph2<=sph2+T;
g>endif;
。oendif;
endif;
空ndif;
endprocess;
process(clk,sph1,sph2,spml,spm2,hou1,hou2,min1,min2)is
begin
if(sphl=hou1andsph2=hou2andspml=minlandspm2=min2)then
ospeak<=clk;
else
?speak<-0,;
endif;
endprocess;
process(c1k)°。一?一一模6計數(shù)
begin。。。一控制晶體管顯示
oifclk'eventandc1k-1*then
“fse1="101uthen
?se1<=H000”;
ee1se
。。。sel<=se1+T;
sendif;
oendif;
endprocess;
process(sel)is
begin
?hl<=houl;h2<=hou2;ml<=min1;m2<=min2;sl<=secl;s2<=sec2;
odl<=,l,;d2<=/r;d3〈二'「;d4v='I1;*8d5<=,l';d6<=,r;
if(switch=M1O^then—調(diào)鬧鐘時,顯示鬧鐘設(shè)立時間
oifsel=n000"then
8dl〈二O;
Qcasesphiis
gwhen“0000”=>dout<="11000000";
ewhenn0001"=>dout<=M11111001M;
。^when"0010H=>dout<="10100100H;
owhenothers=>dout<="XXXXXXXX”;
gendcase;
elsifsel="001"then
8d2<='0';
casesph2is
?when"0000M=>dout<="110OOOOO";
“when”0001M=>dout<="11111001”;
。whenn0010H=>dout<="l0100100”;
owhenH0011"=>dout<=H10110000";
whenH0100n=>dout<=H10011001n;
when"0101M=>dout<="10010010";
-whenH0110"=>dout<=n10000010n;
whenu0111H=>dout<=Hl1111000”;
ooowhenM1000,,=>dout<=,,l0000000u;
。。whenn1001n=>dout<=M100100000;
whenothers=>dout<=MXXXXXXXXH;
ndcase;
elsifse1="010”then
d3<='0';
ocasespm1is
◎when,'0000n=>dout<="l1000000";
8whenH0001,,=>dout<=,,1111100r,;
^when"0010"=>dout<="10100100";
。when”0011H=>dout<=M10110000";
?when"0100H=>dout<=n10011001H;
。when"0101n=>dout<=M10010010";
。owhenothers=>dout<=*'XXXXXXXX
&endcase;
elsifsel="0H"then
K14<='0,;
casespm2is
◎when,'0000',=>dout<=n11000000";
。when"0001"=>dout<="11111001";
。owhen"0010"=>dout<=u10100100”;
0^when"0011"=>dout<="10110000M;
?when"01OOn=>dout<=H10011001”;
。whenu0101u=>dout<=Hl0010010”;
。when"0110H=>dout<="10000010”;
gowhen“0111"=>dout<=Hlllll000”;
。。whenn1000u=>dout<="10000000”;
。owhen,'10010=>dout<='*10010000n;
whenothers=>dout<="XXXXXXXXn;
“endcase;
e1sifsel=*'100"then
M5<=O;
◎casesps1is
when,'0000,'=>dout<=011000000”;
when"0001"=>dout<=nlllll001M;
。when”0010°=>dout<=M10100100”;
when"00HH=>dout<="10110000";
^when"0100n=>dout<=n10011
溫馨提示
- 1. 本站所有資源如無特殊說明,都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請下載最新的WinRAR軟件解壓。
- 2. 本站的文檔不包含任何第三方提供的附件圖紙等,如果需要附件,請聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶所有。
- 3. 本站RAR壓縮包中若帶圖紙,網(wǎng)頁內(nèi)容里面會有圖紙預(yù)覽,若沒有圖紙預(yù)覽就沒有圖紙。
- 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
- 5. 人人文庫網(wǎng)僅提供信息存儲空間,僅對用戶上傳內(nèi)容的表現(xiàn)方式做保護(hù)處理,對用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯,并不能對任何下載內(nèi)容負(fù)責(zé)。
- 6. 下載文件中如有侵權(quán)或不適當(dāng)內(nèi)容,請與我們聯(lián)系,我們立即糾正。
- 7. 本站不保證下載資源的準(zhǔn)確性、安全性和完整性, 同時也不承擔(dān)用戶因使用這些下載資源對自己和他人造成任何形式的傷害或損失。
最新文檔
- 運行庫改造施工方案
- 高速公路標(biāo)志桿施工方案
- 化糞池混凝土施工方案
- 平遠(yuǎn)縣改門改窗施工方案
- 海南靚綠生物科技有限公司年產(chǎn)建設(shè)項目1000噸水溶肥建設(shè)項目環(huán)評報告表
- 2025年鉆孔應(yīng)變儀項目合作計劃書
- 置換強夯的施工方案
- 園路及鋪裝施工方案
- 山西造浪游泳池施工方案
- 寧夏工程電纜線槽施工方案
- 制度經(jīng)濟學(xué):05團(tuán)隊生產(chǎn)理論
- 作文格子紙(1000字)
- 刻度尺讀數(shù)練習(xí)(自制)課件
- 四年級下冊美術(shù)課件 4紙卷魔術(shù)|蘇少版
- 七年級數(shù)學(xué)蘇科版下冊 101 二元一次方程 課件
- ZL50裝載機工作裝置設(shè)計
- 2021年6月浙江省高考讀后續(xù)寫課件-高考英語復(fù)習(xí)備考
- 小學(xué)古詩詞80首(硬筆書法田字格)
- 時間單位換算表
- 《計算機網(wǎng)絡(luò)基礎(chǔ)》第1章計算機網(wǎng)絡(luò)概論
- DTSD342-9N說明書(精編版)
評論
0/150
提交評論