編程做的鍾
⑴ 編程中的時鍾時間是如何得到
簡單的說，有幾種時鍾，可部分參見clock_gettime函數描述。（1）掛鍾，返回的是系統內核裡面的一個變數。這個變數是從主板上的CMOS晶元里讀出的。CMOS晶元是獨立供電的，在電腦斷電後也有小電池供電，就像電子表一樣計時。（2）CPU的計時，是CPU有一個寄存器不斷自動累加，比如2GHz的CPU每0.5ns就+1。（3）可編程時鍾，有低精度的和高精度的兩種，其實都是主板上的晶元，受到CPU的控制。
這個描述非常簡化，系統在其中做了很多事情，其實linux時鍾系統非常復雜，詳情請參閱有關書籍。
⑵ 如何拿單片機用c語言編程做一個鬧鍾
下面的程序就是用AT89C2051做的數字式時鍾，數碼管顯示，具有鬧鍾功能，整點報時，幾點蜂鳴器響幾下，晚上九點到第二天早上六點整點不報時。給你參考一下吧。
#include<AT89X051.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
sbit sda=P3^1;
sbit scl=P3^0;
sbit key1=P1^7;
sbit key2=P1^6;
sbit key3=P1^5;
sbit kz=P3^5;
sbit bs=P3^4;
char shi=12,fen=12,ke1,mm,mi,nh,nf,mn,mms,baos,a;
bit ms,nt,b;
uchar code SEG8[]={ 0x50,0x5F,0x94,0x15,0x1B,
0x31,0x30,0x57,0x10,0x11,
0x40,0x4F,0x84,0x05,0x0B,
0x21,0x20,0x47,0x00,0x01,
0x21,0xa2,0x52,0xff};
//0-9,0.-9.;s.,f.,n 暗
void delay1ms(uchar ms)
{
uchar i;
while(ms--)
{
for(i = 0; i< 250; i++)
{
_nop_();
_nop_();
_nop_();
_nop_();
}
}
}
void display(char numh,char numf)
{
uchar qian,,sh,ge;
if(ke1==1)
qian=20;
else if(ke1==2)
qian=21;
else if((ke1==3)||(ke1==4))
qian=22;
else if(ke1==0)
qian=numh/10;
if((ke1==1)||(ke1==2))
=23;
else if(ke1==3)
=20;
else if(ke1==4)
=21;
else if(ke1==0)
{
=numh%10;
if(ms)
=+10;
}
if((ke1==1)||(ke1==3))
{sh=numh/10;ge=numh%10;}
else if((ke1==2)||(ke1==4)||(ke1==0))
{sh=numf/10;ge=numf%10;}
P1=SEG8[qian];
P3_3=0;delay1ms(2);P3_3=1;
P1=SEG8[];
P3_7=0;delay1ms(2);P3_7=1;
P1=SEG8[sh];
P3_2=0;delay1ms(2);P3_2=1;
P1=SEG8[ge];
P3_0=0;delay1ms(2);P3_0=1;
}
///////////x24c02//////////////////
void delay24()
{ ;; }
void init24c02() //初始化
{
sda=1;
delay24();
scl=1;
delay24();
}
void start2() //開始信號
{
sda=1;
delay24();
scl=1;
delay24();
sda=0;
delay24();
}
void stop() //停止
{
sda=0;
delay24();
scl=1;
delay24();
sda=1;
delay24();
}
void respons() //應答
{
uchar i;
scl=1;
delay24();
while((sda==1)&&(i<250))i++;
scl=0;
delay24();
}
void write_byte(char date) // 寫數據子函數
{
uchar i,temp;
temp=date;
for(i=0;i<8;i++)
{
temp=temp<<1;
scl=0;
delay24();
sda=CY;
delay24();
scl=1;
delay24();
}
scl=0;
delay24();
sda=1;
delay24();
}
uchar read_byte() // 讀數據子函數
{
uchar i,k;
scl=0;
delay24();
sda=1;
delay24();
for(i=0;i<8;i++)
{
scl=1;
delay24();
k=(k<<1)|sda;
scl=0;
delay24();
}
return k;
}
///////寫數據函數///////////////////
void write_add(uchar address,char date)
{
start2();
write_byte(0xa0);
respons();
write_byte(address);
respons();
write_byte(date);
respons();
stop();
}
char read_add(uchar address) //讀數據函數
{
uchar date;
start2();
write_byte(0xa0);
respons();
write_byte(address);
respons();
start2();
write_byte(0xa1);
respons();
date=read_byte();
stop();
return date;
}
void keyf(char *con,char up,char don)
{
uint i;
for(i=0;i<800;i++)
{
if((ke1==1)||(ke1==2))
display(shi,fen);
else if((ke1==3)||(ke1==4))
display(nh,nf);
P1=0xff;
if(key1==0)
{
delay1ms(10);
if(key1==0)
{
ke1++;
if(ke1>=5)
ke1=0;
while(!key1);
break;
}
}
if(key2==0)
{
delay1ms(10);
if(key2==0)
{
i=0;
*con+=1;
if(*con>up)
*con=0;
while(!key2);
}
}
if(key3==0)
{
delay1ms(10);
if(key3==0)
{
i=0;
*con-=1;
if(*con<don)
*con=up;
while(!key3);
}
}
}
}
void key()
{
P1=0xff;
if(key1==0)
{
EA=0;
delay1ms(20);
if(key1==0)
{
ke1++;
if(ke1>=5)
ke1=0;
while(!key1);
}
if(ke1==1)
{
keyf(&shi,23,0);
}
if(ke1==2)
{
keyf(&fen,59,0);
}
if(ke1==3)
{
keyf(&nh,23,0);
}
if(ke1==4)
{
keyf(&nf,59,0);
}
P1=0xff;P3=0xff;
write_add(0x01,nh);
delay1ms(5);
write_add(0x03,nf);
ke1=0;
EA=1;
}
}
void Timer0Init(void)
{
TMOD |= 0x01;
TL0 = 0xB0;
TH0 = 0x3C;
TF0 = 0;
TR0 = 1;
EA=1;
ET0=1;
}
void main()
{
P1=0xff;
P3=0xff;
init24c02();
nh=read_add(0x01);
delay1ms(50);
nf=read_add(0x03);
delay1ms(50);
Timer0Init();
while(1)
{
key();
display(shi,fen);
}
}
void tim0 ()interrupt 1
{
TH0=0X3C;
TL0=0XB0;
if(++mms>=10)
{
mms=0;
ms=!ms;
}
if(++mm>=20)
{
mm=0;
if(++mi>=60)
{
mi=0;
if(++fen>=60)
{
fen=0;
if(++shi>=24)
shi=0;
}
}
}
if(fen==0)
{
if((shi>=7)&&(shi<=20))
{
if((baos==0)&&(b==0))
{
baos=shi;
baos=baos*2;
b=1;
}
if(++a==10)
{
a=0;
if(--baos!=0)
{
bs=!bs;
}
else
{
bs=1;
}
}
}
}
else
b=0;
if(nh==shi)
{
if(nf==fen)
{
if(nt==0)
{
P1=0xff;
if(++mn==10)
{
mn=0;
kz=!kz;
}
if(key3==0)
{
nt=1;
kz=1;
}
}
}
else
{
nt=0;
kz=1;
}
}
}
⑶ 51單片機編程製作電子鍾時間問題。
uchar sec=0,min=0,tnum;把它放到主函數裡面看看，並且tnum=0
⑷ keil 編程 設計 時鍾
題目不是很明了啊 如果是要做程序上的設計：要顯示幾位就定義幾個變數，在主程序里循環顯示這些數據 然後在用定時器定時中斷，在中斷時把相關數據的值改一下就可以了
⑸ 如何用編程製作桌面時鍾
利用窗體、時間控制項、文本框和時間函數。文本框顯示。具體代碼就從略了。
在窗體上添加1個計時器和1個標簽
Private Sub Form_Load()
Label1.Caption = ""
Label1.BorderStyle = 1
Label1.ForeColor = vbWhite
Label1.BackColor = vbRed
Label1.FontSize = 20
Timer1.Interval = 1000
End Sub
Private Sub Timer1_Timer()
Label1.Caption = Time
End Sub
⑹ c++編程 製作一個時鍾，可以顯示小時 分 秒
#include<iostream>
#include<vector>
classCtime{
private:
std::vector<int>_val;
conststaticint_is60=60;
std::vector<int>&calc_clock(constint&v,constintopt=0){
intres=v+opt;
_val.push_back(res%_is60);
_val.push_back((res/_is60)%_is60);
_val.push_back((res-_val[1]*_is60-_val[0])/(_is60*_is60));
return_val;
}
public:
Ctime(constint&v,constintopt=0){
calc_clock(v,opt);
}
friendstd::ostream&operator<<(std::ostream&out,constCtime&clock){
out<<clock._val[2]<<":";
out<<clock._val[1]<<":";
out<<clock._val[0];
returnout;
}
};
intmain(){
Ctimet1(3661);
Ctimet2(3661,-8);
Ctimet3(3661,8);
//
std::cout<<t1<<std::endl;
std::cout<<t2<<std::endl;
std::cout<<t3<<std::endl;
}
⑺ VB編程，做個時鍾
DimPAsSingle,SJ,SHIAsInteger,FENAsInteger,MIAOAsInteger
PrivateSubForm_Load()
Timer1.Interval=1000
Timer1.Enabled=True
P=3.1415926
EndSub
PrivateSubTimer1_Timer()
SJ=Time
SHI=DatePart("H",SJ)
FEN=DatePart("N",SJ)
MIAO=DatePart("S",SJ)
IfSHI>=12Then
SHI=SHI-12
EndIf
Label5.Caption=FormatDateTime(SJ,3)
Line2.X2=2760+1500*Sin(P*(SHI*30+FEN/2)/180)
Line2.Y2=2760-1500*Cos(P*(SHI*30+FEN/2)/180)
Line5.X2=2760+1920*Sin(P*(FEN*6+MIAO/10)/180)
Line5.Y2=2760-1920*Cos(P*(FEN*6+MIAO/10)/180)
Line1.X2=2760+2400*Sin(P*MIAO*6/180)
Line1.Y2=2760-2400*Cos(P*MIAO*6/180)
EndSub
⑻ C++編程：時鍾
下面是我做出來的一個大概樣子，你可以把圖片做得好點就是了，把你郵箱給我，我的郵箱：[email protected]
⑼ 跪求各位會編程的大神，幫我做一個放在桌面的數字時鍾吧！
pc自帶了這個小工具的，不需要舍近求遠，桌面右擊---〉小工具，進去就可以看到數字時鍾這個小工具，拖出來就可以拉
⑽ c語言怎麼樣編寫一個時鍾程序
c語言時鍾程序代碼如下：
#include<windows.h>
#include<math.h>
#define ID_TIMER 1//計時器ID
#define TWOPI (2*3.14159)
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR szCmdLine,int iCmdShow)
{
static TCHAR szAppName[]=TEXT("Clock");
HWND hwnd;
MSG msg;
WNDCLASS wndclass;
wndclass.cbClsExtra=0;
wndclass.cbWndExtra=0;
wndclass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
wndclass.hCursor=LoadCursor(NULL,IDC_ARROW);
wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
wndclass.hInstance=hInstance;
wndclass.lpfnWndProc=WndProc;
wndclass.lpszClassName=szAppName;
wndclass.lpszMenuName=NULL;
wndclass.style=CS_HREDRAW|CS_VREDRAW;
if(!RegisterClass(&wndclass))
{
MessageBox(NULL,TEXT("This program requires Windows
T"),szAppName,MB_ICONERROR);
return 0;
}
hwnd=CreateWindow(szAppName,TEXT("Analog Clock"),WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL);
ShowWindow(hwnd,iCmdShow);
UpdateWindow(hwnd);
while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}
void Setsotropic(HDC hdc,int cxClient,int cyClient)
{
SetMapMode(hdc,MM_ISOTROPIC);
SetWindowExtEx(hdc,1000,1000,NULL);
SetViewportExtEx(hdc,cxClient/2,-cyClient/2,NULL);
SetViewportOrgEx(hdc,cxClient/2,cyClient/2,NULL);
}
void RotatePoint(POINT pt[],int iNum,int iAngle)
{
int i;
POINT ptTemp;
for(i=0;i<iNum;i++)
{
ptTemp.x=(int)(pt[i].x*cos(TWOPI*iAngle/360)+pt[i].y*sin(TWOPI*iAngle/360));
ptTemp.y=(int)(pt[i].y*cos(TWOPI*iAngle/360)+pt[i].x*sin(TWOPI*iAngle/360));
pt[i]=ptTemp;
}
}
void DrawClock(HDC hdc)
{
int iAngle;
POINT pt[3];
for(iAngle=0;iAngle<360;iAngle+=6)
{
pt[0].x=0;
pt[0].y=900;
RotatePoint(pt,1,iAngle);
pt[2].x=pt[2].y=iAngle%5?33:100;
pt[0].x-=pt[2].x/2;
pt[0].y-=pt[2].y/2;
pt[1].x=pt[0].x+pt[2].x;
pt[1].y=pt[0].y+pt[2].y;
SelectObject(hdc,GetStockObject(BLACK_BRUSH));
Ellipse(hdc,pt[0].x,pt[0].y,pt[1].x,pt[1].y );
}
}
void DrawHands(HDC hdc,SYSTEMTIME *pst,BOOL fChange)
{
static POINT pt[3][5]={0,-150,100,0,0,600,-100,0,0,-150, 0,-200,50,0,0,800,-50,0,0,-200, 0,0,0,0,0,0,0,0,0,800 };
int i,iAngle[3];
POINT ptTemp[3][5];
iAngle[0]=(pst->wHour*30)%360+pst->wMinute/2;
iAngle[1]=pst->wMinute*6;
iAngle[2]=pst->wSecond*6;
memcpy(ptTemp,pt,sizeof(pt));
for(i=fChange?0:2;i<3;i++)
{
RotatePoint(ptTemp[i],5,iAngle[i]);
Polyline(hdc,ptTemp[i],5);
}
}
LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
static int cxClient,cyClient;
static SYSTEMTIME stPrevious;
BOOL fChange;
HDC hdc;
PAINTSTRUCT ps;
SYSTEMTIME st;
switch(message)
{
case WM_CREATE:
SetTimer(hwnd,ID_TIMER,1000,NULL);
GetLocalTime(&st);
stPrevious=st;
return 0;
case WM_SIZE:
cxClient=LOWORD(lParam);
cyClient=HIWORD(lParam);
return 0;
case WM_TIMER:
GetLocalTime(&st);
fChange=st.wHour!=stPrevious.wHour||st.wMinute!=stPrevious.wMinute;
hdc=GetDC(hwnd);
Setsotropic(hdc,cxClient,cyClient);
SelectObject(hdc,GetStockObject(WHITE_PEN));
DrawHands(hdc,&stPrevious,fChange);
SelectObject(hdc,GetStockObject(BLACK_PEN));
DrawHands(hdc,&st,TRUE);
stPrevious=st;
return 0;
case WM_PAINT:
hdc=BeginPaint(hwnd,&ps);
Setsotropic(hdc,cxClient,cyClient);
DrawClock(hdc);
DrawHands(hdc,&stPrevious,TRUE);
EndPaint(hwnd,&ps);
return 0;
case WM_DESTROY:
KillTimer(hwnd,ID_TIMER);
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hwnd,message,wParam,lParam);
}