在音视频处理电路中:AOUT —— 音频输出,VOUT —— 视频输出。
在模拟、数字混合电路中:
DAOUT—— D/A输出,即数模转换器(DAC)的模拟信号输出端;
AOUT —— 模拟信号输出 ,如电压放大器的输出信号。
您好,可以的。方法
C盘windows可以删除的文件
Windows里面的Temp(系统临时文件);SoftwareDistribution内部的download;Prefetch等这些文件夹里面的所有文件都可以删除。
C盘Documents and Settings可以删除的文件
Documents and Settings里用户内部的:Recent;Cookies;Local Settings下的History、Temp、TemporaryInternet Files等文件夹里面的文件都可以删除,不会影响系统正常运行的。
C盘里面隐藏的文件及文件夹
有些文件是隐藏的,打开我的电脑后-选择“工具”选项卡下拉的“文件夹选项”,在“查看”选项卡下面的高级设置中,找到“隐藏文件和文件夹”,点击单选中的“显示所有文件和文件夹”,隐藏的文件就可以显示出来,删除是对电脑系统没有影响的。
C盘里面下载-自己放的东西
很多朋友在网上下载软件或者图片等东西时,都会保存/下载到c盘里面,如果想清理c盘,这些东西就可以转移到其他磁盘里面继续使用就可以了。
如果你有很多东西需要存放到电脑上,建议你最好放在E盘或者F盘,这样既不会影响C盘的容量,也不会影响电脑的运行速度及安全性。
library ieeeuse ieee.std_logic_1164.all
use ieee.std_logic_unsigned.all
entity MINSECONDb is
port(clk,clrm,stop:in std_logic----时钟/清零信号
secm1,secm0:out std_logic_vector(3 downto 0)----秒高位/低位
co:out std_logic)-------输出/进位信号
end MINSECONDb
architecture SEC of MINSECONDb is
signal clk1,DOUT2:std_logic
begin
process(clk,clrm)
variable cnt1,cnt0:std_logic_vector(3 downto 0)---计数
VARIABLE COUNT2 :INTEGER RANGE 0 TO 10
begin
IF CLK'EVENT AND CLK='1'THEN
IF COUNT2>=0 AND COUNT2<10 THEN
COUNT2:=COUNT2+1
ELSE COUNT2:=0
DOUT2<= NOT DOUT2
END IF
END IF
if clrm='1' then----当clr为1时,高低位均为0
cnt1:="0000"
cnt0:="0000"
elsif clk'event and clk='1' then
if stop='1' then
cnt0:=cnt0
cnt1:=cnt1
end if
if cnt1="1001" and cnt0="1000" then----当记数为98(实际是经过59个记时脉冲)
co<='1'----进位
cnt0:="1001"----低位为9
elsif cnt0<"1001" then----小于9时
cnt0:=cnt0+1----计数
--elsif cnt0="1001" then
--clk1<=not clk1
else
cnt0:="0000"
if cnt1<"1001" then----高位小于9时
cnt1:=cnt1+1
else
cnt1:="0000"
co<='0'
end if
end if
end if
secm1<=cnt1
secm0<=cnt0
end process
end SEC
秒模块程序清单
library ieee
use ieee.std_logic_1164.all
use ieee.std_logic_unsigned.all
entity SECOND is
port(clk,clr:in std_logic----时钟/清零信号
sec1,sec0:out std_logic_vector(3 downto 0)----秒高位/低位
co:out std_logic)-------输出/进位信号
end SECOND
architecture SEC of SECOND is
begin
process(clk,clr)
variable cnt1,cnt0:std_logic_vector(3 downto 0)---计数
begin
if clr='1' then----当ckr为1时,高低位均为0
cnt1:="0000"
cnt0:="0000"
elsif clk'event and clk='1' then
if cnt1="0101" and cnt0="1000" then----当记数为58(实际是经过59个记时脉冲)
co<='1'----进位
cnt0:="1001"----低位为9
elsif cnt0<"1001" then----小于9时
cnt0:=cnt0+1----计数
else
cnt0:="0000"
if cnt1<"0101" then----高位小于5时
cnt1:=cnt1+1
else
cnt1:="0000"
co<='0'
end if
end if
end if
sec1<=cnt1
sec0<=cnt0
end process
end SEC
分模块程序清单
library ieee
use ieee.std_logic_1164.all
use ieee.std_logic_unsigned.all
entity MINUTE is
port(clk,en:in std_logic
min1,min0:out std_logic_vector(3 downto 0)
co:out std_logic)
end MINUTE
architecture MIN of MINUTE is
begin
process(clk)
variable cnt1,cnt0:std_logic_vector(3 downto 0)
begin
if clk'event and clk='1' then
if en='1' then
if cnt1="0101" and cnt0="1000" then
co<='1'
cnt0:="1001"
elsif cnt0<"1001" then
cnt0:=cnt0+1
else
cnt0:="0000"
if cnt1<"0101" then
cnt1:=cnt1+1
else
cnt1:="0000"
co<='0'
end if
end if
end if
end if
min1<=cnt1
min0<=cnt0
end process
end MIN
时模块程序清单
library ieee
use ieee.std_logic_1164.all
use ieee.std_logic_unsigned.all
entity HOUR is
port(clk,en:in std_logic----输入时钟/高电平有效的使能信号
h1,h0:out std_logic_vector(3 downto 0))----时高位/低位
end HOUR
architecture hour_arc of HOUR is
begin
process(clk)
variable cnt1,cnt0:std_logic_vector(3 downto 0)----记数
begin
if clk'event and clk='1' then---上升沿触发
if en='1' then---同时“使能”为1
if cnt1="0010" and cnt0="0011" then
cnt1:="0000"----高位/低位同时为0时
cnt0:="0000"
elsif cnt0<"1001" then----低位小于9时,低位记数累加
cnt0:=cnt0+1
else
cnt0:="0000"
cnt1:=cnt1+1-----高位记数累加
end if
end if
end if
h1<=cnt1
h0<=cnt0
end process
end hour_arc
动态扫描模块
library ieee
use ieee.std_logic_1164.all
use ieee.std_logic_unsigned.all
use ieee.std_logic_arith.all
entity SELTIME is
port(
clk:in std_logic------扫描时钟
secm1,secm0,sec1,sec0,min1,min0,h1,h0:in std_logic_vector(3 downto 0)-----分别为秒个位/时位;分个位/
daout:out std_logic_vector(3 downto 0)----------------输出
sel:out std_logic_vector(2 downto 0))-----位选信号
end SELTIME
architecture fun of SELTIME is
signal count:std_logic_vector(2 downto 0)----计数信号
begin
sel<=count
process(clk)
begin
if(clk'event and clk='1') then
if(count>="111") then
count<="000"
else
count<=count+1
end if
end if
case count is
when"111"=>daout<= secm0----秒个位
when"110"=>daout<= secm1----秒十位
when"101"=>daout<= sec0----分个位
when"100"=>daout<= sec1----分十位
when"011"=>daout<=min0 ----时个位
when"010"=>daout<=min1----时十位
when"001"=>daout<=h0
when others =>daout<=h1
end case
end process
end fun
报时模块
library ieee
use ieee.std_logic_1164.all
entity ALERT is
port(m1,m0,s1,s0:in std_logic_vector(3 downto 0)------输入秒、分高/低位信号
clk:in std_logic------高频声控制
q500,qlk:out std_logic)----低频声控制
end ALERT
architecture sss_arc of ALERT is
begin
process(clk)
begin
if clk'event and clk='1' then
if m1="0101" and m0="1001" and s1="0101" then----当秒高位为5,低位为9时且分高位为5
if s0="0001" or s0="0011" or s0="0101" or s0="0111" then---当分的低位为1或3或5或7时
q500<='1'----低频输出为1
else
q500<='0'----否则输出为0
end if
end if
if m1="0101" and m0="1001" and s1="0101" and s0="1001" then---当秒高位为5,低位为9时且分高位为5,----分低位为9时,也就是“59分59秒”的时候“报时”
qlk<='1'-----高频输出为1
else
qlk<='0'
end if
end if
end process
end sss_arc
显示模块
library ieee
use ieee.std_logic_1164.all
entity DISPLAY is
port(d:in std_logic_vector(3 downto 0)----连接seltime扫描部分d信号
q:out std_logic_vector(6 downto 0))----输出段选信号(电平)
end DISPLAY
architecture disp_are of DISPLAY is
begin
process(d)
begin
case d is
when"0000" =>q<="0111111"--显示0
when"0001" =>q<="0000110"--显示1
when"0010" =>q<="1011011"--显示2
when"0011" =>q<="1001111"--显示3
when"0100" =>q<="1100110"--显示4
when"0101" =>q<="1101101"--显示5
when"0110" =>q<="1111101"--显示6
when"0111" =>q<="0100111"--显示7
when"1000" =>q<="1111111"--显示8
when others =>q<="1101111"--显示9
end case
end process
end disp_are
顶层文件(原理图输入)
********************************************************************
数字钟设计模块与程序(不含秒表)
*********************************************************************
1.分频模块(原理图输入)
2. 秒模块程序
library ieee
use ieee.std_logic_1164.all
use ieee.std_logic_unsigned.all
entity SECOND is
port(clk,clr:in std_logic
sec1,sec0:out std_logic_vector(3 downto 0)
co:out std_logic)
end SECOND
architecture SEC of SECOND is
begin
process(clk,clr)
variable cnt1,cnt0:std_logic_vector(3 downto 0)
begin
if clr='1' then
cnt1:="0000"
cnt0:="0000"
elsif clk'event and clk='1' then
if cnt1="0101" and cnt0="1000" then
co<='1'
cnt0:="1001"
elsif cnt0<"1001" then
cnt0:=cnt0+1
else
cnt0:="0000"
if cnt1<"0101" then
cnt1:=cnt1+1
else
cnt1:="0000"
co<='0'
end if
end if
end if
sec1<=cnt1
sec0<=cnt0
end process
end SEC
3.分模块程序
library ieee
use ieee.std_logic_1164.all
use ieee.std_logic_unsigned.all
entity MINUTE is
port(clk,en:in std_logic
min1,min0:out std_logic_vector(3 downto 0)
co:out std_logic)
end MINUTE
architecture MIN of MINUTE is
begin
process(clk)
variable cnt1,cnt0:std_logic_vector(3 downto 0)
begin
if clk'event and clk='1' then
if en='1' then
if cnt1="0101" and cnt0="1000" then
co<='1'
cnt0:="1001"
elsif cnt0<"1001" then
cnt0:=cnt0+1
else
cnt0:="0000"
if cnt1<"0101" then
cnt1:=cnt1+1
else
cnt1:="0000"
co<='0'
end if
end if
end if
end if
min1<=cnt1
min0<=cnt0
end process
end MIN
4.时模块程序
library ieee
use ieee.std_logic_1164.all
use ieee.std_logic_unsigned.all
entity HOUR is
port(clk,en:in std_logic
h1,h0:out std_logic_vector(3 downto 0))
end HOUR
architecture hour_arc of HOUR is
begin
process(clk)
variable cnt1,cnt0:std_logic_vector(3 downto 0)
begin
if clk'event and clk='1' then
if en='1' then
if cnt1="0010" and cnt0="0011" then
cnt1:="0000"
cnt0:="0000"
elsif cnt0<"1001" then
cnt0:=cnt0+1
end if
end if
end if
h1<=cnt1
h0<=cnt0
end process
end hour_arc
5.扫描模块程序
library ieee
use ieee.std_logic_1164.all
use ieee.std_logic_unsigned.all
use ieee.std_logic_arith.all
entity SELTIME is
port(
clk:in std_logic
sec1,sec0,min1,min0,h1,h0:in std_logic_vector(3 downto 0)
daout:out std_logic_vector(3 downto 0)
sel:out std_logic_vector(2 downto 0))
end SELTIME
architecture fun of SELTIME is
signal count:std_logic_vector(2 downto 0)
begin
sel<=count
process(clk)
begin
if(clk'event and clk='1') then
if(count>="101") then
count<="000"
else
count<=count+1
end if
end if
case count is
when"000"=>daout<= sec0
when"001"=>daout<= sec1
when"010"=>daout<= min0
when"011"=>daout<= min1
when"100"=>daout<=h0
when others =>daout<=h1
end case
end process
end fun
6.显示模块程序
library ieee
use ieee.std_logic_1164.all
entity DISPLAY is
port(d:in std_logic_vector(3 downto 0)
q:out std_logic_vector(6 downto 0))
end DISPLAY
architecture disp_are of DISPLAY is
begin
process(d)
begin
case d is
when"0000" =>q<="0111111"
when"0001" =>q<="0000110"
when"0010" =>q<="1011011"
when"0011" =>q<="1001111"
when"0100" =>q<="1100110"
when"0101" =>q<="1101101"
when"0110" =>q<="1111101"
when"0111" =>q<="0100111"
when"1000" =>q<="1111111"
when others =>q<="1101111"
end case
end process
end disp_are
7.定时闹钟模块程序
library ieee
use ieee.std_logic_1164.all
entity ALERT is
port(m1,m0,s1,s0:in std_logic_vector(3 downto 0)
clk:in std_logic
q500,qlk:out std_logic)
end ALERT
architecture sss_arc of ALERT is
begin
process(clk)
begin
if clk'event and clk='1' then
if m1="0101" and m0="1001" and s1="0101" then
if s0="0001" or s0="0011" or s0="0101" or s0="0111" then
q500<='1'
else
q500<='0'
end if
end if
if m1="0101" and m0="1001" and s1="0101" and s0="1001" then
qlk<='1'
else
qlk<='0'
end if
end if
end process
end sss_arc
欢迎分享,转载请注明来源:内存溢出
评论列表(0条)