Simone多功能数字钟电路设计
的有关信息介绍如下：
数字钟的VHDL设计
1、设计任务及要求：
设计任务：设计一台能显示时、分、秒的数字钟。具体要求如下：
由实验箱上的时钟信号经分频产生秒脉冲；
计时计数器用24进制计时电路；
可手动校时，能分别进行时、分的校正；
整点报时；
2 程序代码及相应波形
Second1(秒计数 6进制和10进制)
Library ieee;
Use ieee.std_logic_1164.all;
Use ieee.std_logic_unsigned.all;
Entity second1 is
Port( clks,clr:in std_logic;
Secs,Secg: out std_logic_vector(3 downto 0);
cout1:out std_logic);
End second1;
Architecture a of second1 is
Begin
Process(clks,clr)
variable ss,sg: std_logic_vector(3 downto 0);
variable co: std_logic;
Begin
If clr='1' then ss:="0000"; sg:="0000";
Elsif clks'event and clks='1' then
if ss="0101" and sg="1001" then ss:="0000"; sg:="0000";co:='1';
elsif sg<"1001" then sg:=sg+1;co:='0';
elsif sg="1001" then sg:="0000";ss:=ss+1;co:='0';
end if;
end if;
cout1<=co;
Secs<=ss;
Secg<=sg;
end process;
End a;
Min1（分计数器 6进制和10进制 alm实现整点报时）
Library ieee;
Use ieee.std_logic_1164.all;
Use ieee.std_logic_unsigned.all;
Entity min1 is
Port(clkm,clr:in std_logic;
mins,ming:buffer std_logic_vector(3 downto 0);
enmin,alarm: out std_logic);
End;
Architecture a of min1 is
Begin
Process(clkm,clr)
variable ms,mg :std_logic_vector(3 downto 0);
variable so,alm :std_logic;
Begin
If clr='1' then ms:="0000"; mg:="0000";
Elsif clkm'event and clkm='1' then
if ms="0101" and mg="1001" then ms:="0000";mg:="0000"; so :='1'; alm:='1';
elsif mg<"1001" then mg:=mg+1; so :='0';alm:='0';
elsif mg="1001" then mg:="0000";ms:=ms+1; so :='0';alm:='0';
end if;
end if;
alarm<=alm;
enmin<= so;
mins<=ms;
ming<=mg;
End process;
End a;
Hour1（时计数器 4进制与2进制）
Library ieee;
Use ieee.std_logic_1164.all;
Use ieee.std_logic_unsigned.all;
Entity hour1 is
Port(clkh,clr:in std_logic;
hours,hourg:out std_logic_vector(3 downto 0));
End;
Architecture a of hour1 is
Begin
Process(clkh,clr)
variable hs,hg :std_logic_vector(3 downto 0);
Begin
If clr='1' then hs:="0000"; hg:="0000";
Elsif clkh'event and clkh='1' then
if hs="0010"and hg="0011" then hs:="0000";hg:="0000";
elsif hg<"1001" then hg:=hg+1;
elsif hg="1001" then hg:="0000";hs:=hs+1; end if;
end if;
hours<=hs;
hourg<=hg;
End process;
End;
Madapt（校分）
Library ieee;
Use ieee.std_logic_1164.all;
Use ieee.std_logic_unsigned.all;
Entity madapt is
Port(en,clk,secin,m1:in std_logic;
minset:out std_logic);
End;
Architecture a of madapt is
Begin
Process(en,m1)
Begin
if en='1' then
if m1='1' then minset<=clk;
else minset<=secin; end if;
else minset<=secin ;
end if;
End process;
end;
Hadapt (校时)
Library ieee;
Use ieee.std_logic_1164.all;
Use ieee.std_logic_unsigned.all;
Entity hadapt is
Port(en,clk,minin,h1:in std_logic;
hourset:out std_logic);
End;
Architecture a of hadapt is
Begin
Process(en,h1)
Begin
if en='1' then
if h1='1' then hourset<=clk;
else hourset<=minin; end if;
else hourset<=minin;
end if;
End process;
end;
Topclock（元件例化 顶层文件）
Library ieee;
Use ieee.std_logic_1164.all;
Use ieee.std_logic_arith.all;
Use ieee.std_logic_unsigned.all;
Entity topclock is
Port(clk,clr,en,m1,h1:in std_logic;
alarm:out std_logic;
secs,secg,mins,ming,hours,hourg:buffer std_logic_vector(3 downto 0));
End;
Architecture one of topclock is
Component second1
Port( clks,clr:in std_logic;
secs,secg: buffer std_logic_vector(3 downto 0);
cout1: out std_logic);
End Component;
Component min1
Port(clkm,clr:in std_logic;
mins,ming:buffer std_logic_vector(3 downto 0);
enmin,alarm: out std_logic);
End Component;
Component hour1
Port(clkh,clr:in std_logic;
hours,hourg:buffer std_logic_vector(3 downto 0));
End Component;
Component madapt
Port(en,m1,clk,secin:in std_logic;
minset:out std_logic);
End Component;
Component hadapt
Port(en,h1,clk,minin:in std_logic;
hourset:out std_logic);
End Component;
signal a,b,c,d: std_logic;
begin
u1:second1 port map(clr=>clr,
secs=>secs,secg=>secg,clks=>clk, cout1=>a);
u2:min1 port map(clr=>clr,alarm=>alarm,
mins=>mins,ming=>ming,clkm=>b,enmin=>c);
u3:hour1 port map(clr=>clr,
hours=>hours,hourg=>hourg,clkh=>d);
u4:madapt port map(en=>en,m1=>m1,clk=>clk,secin=>a,minset=>b);
u5:hadapt port map(en=>en,h1=>h1,clk=>clk,minin=>c,hourset=>d);
end;
3 电路图
4 实验心得
程序全部都给你写好了啊，只 要你自己仿真，再下载到实验箱就OK了啦
具体的先写HDL，写好了EDA工具给综合
到我的Q空间看看
吧
