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9 Q* @3 M" h2 C; x, A7 V [基于单片机的电子钟仿真原理图如下(proteus仿真工程文件可到本帖附件中下载)- t" l4 B G9 r5 j* i, p3 @! [
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蓝桥杯任务单片机源程序如下: | - X9 c( u0 c) V2 x# k: ~# a8 l
#include <regx51.h>
% z5 q: ^4 g0 @+ D. M#include <intrins.h>
# Y& c2 w% u1 d7 m% c
0 C9 D9 D1 e$ R4 Q0 ]sfr AUXR = 0x8e;
: a1 d$ ]9 S( `# E/*数码管显示字符转换表*/
% j5 G! c: Q$ l2 Y5 J4 ^/ Punsigned char tab[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00,0x40,0x39};1 R8 Y8 J/ p% K# {8 i5 e
signed char num[] = {10,10,10,10,10,10,10,10}; //数码管显示缓冲区
2 N! t; V( M+ \) g. {7 A& Bsigned char timeclock[] = {0,0,11,0,0,11,0,0}; //闹钟时间
0 t- q. Z5 }8 r( p' d+ X( [unsigned char TRH0,TRL0; //T0重载值的高字节和低字节* c; G2 C9 v7 S H% z
bit clock = 0; //闹钟时间到标志位4 }3 t" g9 y4 o% W( j! {( {
bit flag = 0; //1s闪烁标志位; w+ M- w3 A4 k& e
bit flag200ms = 0; //200ms定时标志位
" o' N' W6 R! ~9 U8 Rbit timesetup = 0; //时间设置标志位7 y* M+ V' U( ?3 p1 T- y
bit clocksetup = 0; //闹钟设置标志位; n* t% l$ ?- t
unsigned position = 0; //设置小时,分钟,秒标志位(‘1’小时,‘2’分钟,‘3’秒)
1 Z9 R s% U& x4 P, Vunsigned char Temp; //温度值
" ~- Q, l: x9 S- A6 |/ ]" gunsigned char Time[5]; //时间值, w; {* {4 E" V0 U
8 [/ [5 N" |; M4 Bvoid key(); //按键判断执行函数
8 ? \9 ?7 t$ W0 n0 wvoid Ds1302_Display(); //时间显示函数% I7 T4 I( }! C) j8 J5 y9 o
void Ds18b20_Display(); //温度显示函数
4 h' y- Y# {$ _1 X
, `' u! y- p \& Q% @: Pextern void Ds1302_Init(); //DS1302初始化函数" Q! B! m' ^( }6 B% H, D
void Ds1302_Time(unsigned char *time); //带参数的向DS18B20写时间 1 e6 m6 Q( o( `: A% I: G+ A
extern void Write_Ds1302_Byte(unsigned char temp); //向DS1302写入数据
9 T0 c9 {# h9 w4 d" m) o: xextern unsigned char Read_Ds1302 (unsigned char address); //从DS1302读取数据8 L! V; e0 J8 F' C
extern unsigned char DS18B20_Temp(); //读取DS18B20温度值
5 f/ z3 u2 Q/ ~! n4 f: v
5 W' L1 ~9 R8 P9 I' d) i$ f- Z" r6 @, V; S6 o; k
/*T0初始化函数 (ms = 中断时间)*/
4 h5 \, Q, |. ] ^: m5 d lvoid Time0_Init(unsigned char ms)* {9 V6 @. q( F
{
' _7 j0 ?$ t- C3 K( S8 S/ M% m unsigned long num; //临时变量5 `# n8 p9 h3 y
num = 12000000 / 12; //12分频 定时器计数频率5 ^& C; {5 j% L( q% S b
num = (num * ms)/1000; //计算所需的计数值1 t+ n$ U! y8 k7 v U
num = 65536 - num; //计算定时器重载值( g& X0 C( g! \6 t: Z+ l+ I H& t
TRH0 = (unsigned char)(num>>8); //定时器重载值拆分为高低字节
Y$ X; y3 d( g4 w% y3 s TRL0 = (unsigned char)num; O" N: s* @ I& C
TH0 = TRH0; //加载T0重载值
) [" ~9 Y8 i, i& x: t6 S. \1 m TL0 = TRL0;
' i4 j3 z' I1 G9 N6 G4 k: F% } AUXR &= 0x7F;
) I5 f0 s/ J) w5 ?. U! q TMOD &= 0xf0; //清零T0的控制位- e1 |7 G0 z$ Z* z) C1 _
TMOD |= 0x01; //配置T0为模式1
1 i+ \5 [- F( T( j/ C- P; f EA = 1; //使能总中断8 @# V5 D0 [- L: R7 q; J3 j
ET0 = 1; //使能T0中断
8 S; }# J# C j TR0 = 1; //启动T0
: r. d7 }! e) {* V}* ?4 E Q' t/ ]
9 y6 @6 |- H3 ]- R3 kvoid main()
8 p& v. V! Q6 L{
& k5 E7 F! ^* N0 Z# ` unsigned char i,k=0;
* z; J! t0 Z7 H5 o$ w9 l9 |( d
$ V% C7 L' t4 S3 J5 l* I Time0_Init(1); //初始化T0,定时时间为1ms& v# T& i$ P9 G. Q: b
Ds1302_Init(); //初始化DS1302
% b! Z8 i& @+ F3 g) ^) G: I$ v: s- ? while(1)) v& A% _2 [) K
{8 g$ W" D5 M7 p* Z7 b, ~0 B/ Q1 e
key(); * K; q9 \. e; n0 A0 c8 Y: n" y; `
for(i=0;i<8;i++)7 p: |) g) U/ J
{
& M' k6 L2 s" i if(num==timeclock)
$ Z/ _& D9 s6 _2 [8 s# ^8 z k++ ;
b2 g+ P$ A# ?' f l7 C+ b) W) ` else
( R& R7 u0 H j8 N& s k = 0;& I4 C" [/ T4 T( {$ p# S+ M
}7 Y6 x6 @2 o6 q/ C; h
if(k == 8)) L0 J. K; M- E7 L7 O+ {+ x
clock = 1;
' k, g- n5 \! B% H1 a+ P6 R7 G
' g. B% d* Z& U5 U+ N, U* z: B. ~ } ( {1 I2 U% o- o* _
}
" v0 Z1 l, m* A( ], Q o( q/ L/*DS18B20显示函数*/( y+ p1 H- j' }" c* y
void Ds18b20_Display()8 W. Z. i4 j+ r, ^: U
{
( V0 ?, Y* F; F" } unsigned char i;
5 w4 ^ X* n1 c$ }9 [" E7 |
4 ]- j7 ^( p2 T: F( n; {: s if(flag200ms != 0)
: @0 p- A( q! u {
9 P) y8 g+ e; D& J% J0 | flag200ms = 0;
0 n$ K5 g/ \6 i8 t2 v. b Temp = DS18B20_Temp();7 P: D2 `5 h9 X3 S; K6 B9 A
& h3 y- D0 k! r. B) z for(i=0;i<5;i++)
/ e3 M/ T ~ p' G" W7 P {
* x F; g/ c) g9 B/ w( H$ B" b. m: g- [ num = 10;
; z' ^2 _- ?6 a0 l }
( Z1 u6 ^& {7 ]7 @, X) y. r( u; F( e5 s; R) h
num[5] = Temp / 10;
2 j% T/ u/ F4 m; }" {' X" S0 h6 W num[6] = Temp % 10;
# R2 a' h3 J, h/ q$ p- k num[7] = 12;5 z" @- I0 m1 X4 h* e g7 E- h+ y
}8 M: ]* V" z5 F
}9 A$ X+ h J& s- I0 x$ t, \( F
/*DS1302显示函数*/
/ e# n# l% P1 l( Z4 bvoid Ds1302_Display()/ }6 ~) C3 B+ S7 V
{9 d8 k* k0 u. q, Z; h
static unsigned char i;
+ |- V: ^% d5 Z% I; E: X# Q static unsigned char pers = 0xaa;
/ @' A; K6 V" b; Y$ ^+ ]8 L0 E
2 G, K9 ?0 V: c5 f. T2 H: {$ W; x& H; ~
if(flag200ms != 0)
6 s) d' X/ e: d: I, ~ {
0 p5 \6 Y1 j# r0 H+ j flag200ms = 0;
/ f; a* `1 j" \3 n9 j7 S8 x/ r for(i=0;i<3;i++)* J, f3 h& Y" W5 B( G
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Time = Read_Ds1302(i); //每200ms获取时间
: z% x6 l' d! V! s- z( S2 P }4 c- E3 d G6 S d
if(pers != Time[0]) //判断时间有没有变化6 w% ~8 _( q# T0 ^( T
{
' ?- k* ^# g2 ?7 Z# z- d- S" @/ ` num[7] = Time[0] & 0x0f; //秒
8 X) A, d6 F& ? num[6] = Time[0] >> 4;/ O* e( P9 J5 n8 Q% w* L( t6 H
num[5] = 11;: b/ A2 s+ ]& o; E. n
num[4] = Time[1] & 0x0f; //分9 ?# {/ y6 h3 z9 Q
num[3] = Time[1] >> 4;
* V3 e5 u* A( O num[2] = 11;2 X( e' f: O4 E
num[1] = Time[2] & 0x0f; //时! S9 B l* B- X0 M4 v+ d
num[0] = Time[2] >> 4;
( {( u7 F& p3 b, E; C, U
. c7 H/ P! ~. X3 Y5 x5 L pers = Time[0]; //将变化值重新写入判断值/ n8 I0 |1 N+ E) k5 K
}' n5 H9 ]. K) R$ ?3 \; [
} 1 D0 @6 a% ? U
}
6 p8 g% Z% f3 ]5 P2 p* H/*数码管显示函数*/
+ n: x. V2 o% ?9 c7 a* x- s+ o# b" bvoid Display() + s _, \) ]) Y$ D2 t
{- x0 c ]. z5 K4 ^1 h. _5 h1 B
static unsigned char we = 0; ( X" _7 r1 C8 W; S9 |4 p: m
; \1 C! C1 y$ T1 ]3 @& j9 | P0 = 0x00; //清除鬼影( k$ ]: r' d" U: \" b# p. f& t( Q
P2 |= 0xff; * s# G3 j' I M/ }% m- ?- j
) q9 ]: H2 U* X P2 &= ~(1<<we); //位选择3 f; {) H- i: q; K0 Q) j d( u; T
if(clocksetup)* Y- |3 Z; ^0 _# Z3 N: g
P0 = tab[timeclock[we]];3 F3 P( }) {8 `) B0 h, x3 o: H
else( y* J0 o4 ~! Z8 T8 l' J
P0 = tab[num[we]]; //显示数选择
+ @2 f6 Y7 s2 _
$ f4 A S5 @/ S0 l4 n% c if(flag) //进入设置状态
* r& k* T, v. l5 @8 r {
8 Y& W, P0 T4 k4 E switch(position) //判断是那个设置位
0 n' e6 M( a% o1 p5 K {
* [. }) w3 O _ case 1: P2 |= 0xc0; break; //秒9 u1 r! v& M0 @5 _
case 2: P2 |= 0x18; break; //分
4 E9 o. I- G! {+ ?) Z3 i case 3: P2 |= 0x03; break; //时
& A. M% I: p8 x. s" f* J default : position = 0; timesetup = 0; clocksetup = 0; break;
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}
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if(++we >= 8) //八个数码管 $ l* w3 X2 k8 H: z7 B: s
we = 0; ' S7 D' O/ {; Q( E- E4 n, [
}* y/ E0 d, `. K$ j5 j
, O! R% L& z/ S/*T0中断函数*/ $ [* n5 e9 @- I, d3 I' d
void Time0_inte() interrupt 1! e: o8 m& K9 U+ l- H
{( C0 m6 J* W) ^$ R$ Y- K3 c: s4 u
static unsigned char ms = 0;
8 m; s0 u. y! D6 b7 d+ a static unsigned char flag1s = 0;
, v& ^3 N) h5 h, [6 H. L1 W, \ static unsigned char flag5s = 0;' ?& _3 O( ?; u: E3 _
0 H/ n4 _. y6 K/ M f9 j: I1 e- I- I TH0 = TRH0; //加载T0重载值
l, I( J* F% P% g Y8 t TL0 = TRL0;
8 b3 ^, X4 c7 ]( Y- _* |2 Y( [& ?, _. t
Display(); //数码管显示
2 s& e& ]- m* D+ ^
2 u& J$ l1 X% s s7 m; O- i: {4 I if(++ms >= 200)
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flag200ms = 1;( k/ x; ]9 y7 p
ms = 0;
, W3 y+ o' {5 [$ d' ? if(flag5s < 5 && clock) //闹钟5秒时间判断
7 n9 @9 u8 | g2 [3 |; b {3 N3 e; ?) H! U2 ~
P1_0 = ~P1_0;' r' ? V; P0 }' A) k' o0 y, X
}
$ d. ?+ c3 U5 B _7 v: R else
0 p+ T" A& C4 E) a2 P {
2 X! H, f+ \/ k9 E, ^1 k clock = 0;
- B, C& { R5 v$ {' _' g P1_0 = 0;+ W7 z+ r& I( r$ F4 O! r
}! A1 I; n! d& x4 y5 f, w1 u7 J
if(++flag1s >= 5)
; W& g2 w+ s+ }, a, P( @/ j- _ {$ @$ X# m/ y1 Q: }4 g
flag1s = 0;, R ?; C9 a! A. C3 _. X* F) h
flag = ~flag;3 f5 n' N+ Q5 B* g/ J0 ?
if(clock)
' B2 w. |# T& O7 ~. s9 v flag5s++;
5 I( O% {- h; h: n else% Y/ _% I2 }5 ]( O& ]0 v" c
flag5s = 0;# F3 C5 n- G) H& i6 X: r
}
" s+ C' R: M m! `) X } 8 e7 Z* J- V5 \- k2 p2 {/ Q3 c/ S
}
+ ]4 _8 F/ X3 k' v//向DS1302写入时间+ v N* }+ w4 z9 k( A
void TimeWeite()
% G, b2 z! z8 L- Z" |! E3 E5 J{
" m8 [3 ?+ R8 S, u( k unsigned char ti[3]; # |3 P# z v* G
//将两个分开的时间合成在一起
* S Q. h# ]0 ]. A& x& b ti[0] = ((num[6]<<4) | num[7]);; O3 U4 e2 Z# v: ?3 J# H D7 y
ti[1] = ((num[3]<<4) | num[4]);
$ ]' y% ^4 o( n' y1 p ti[2] = ((num[0]<<4) | num[1]);
# _7 _ m+ Z) A' j: `4 |6 z3 k; `( }/ G6 w- M
Ds1302_Time(ti);
1 E; c S) ?2 p Z C}
/ V0 P- b0 _0 d% }' {( x& C
: K; s5 Q3 h, K* j" \7 s0 Tvoid key()
9 L' h! B" e3 R& v8 ?{
3 Y0 ]7 X( |/ n if((P3_0==0||P3_1==0||P3_2==0||P3_3==0)&&clock==1) //闹钟响应,进行关闭% y2 _) |0 x- a# f" G* ~/ a
{
1 r, l' U4 v. B# x7 X- J clock = 0;' G+ h+ K; l* G8 X
while(!P3_0);while(!P3_1);
4 g! G7 |$ Y8 y3 q: k. o while(!P3_2);while(!P3_3);( [& _7 g9 l& t, J+ l* o2 T
}6 v5 F& p2 ^) k2 i8 y
* b9 q, Y) @, E. h if(timesetup!=1 && clocksetup!=1 && P3_0==1) //按下显示温度值,松开显示时间
5 O5 o. H9 Q: Z {* _9 ~' n: _* |3 X4 W* `
Ds1302_Display();8 B: V! A& h. E4 E
}else if(timesetup!=1 && clocksetup!=1 &&P3_0 == 0)
. `) Q( l3 ^- E {" L2 t! L+ [, y/ N( \
Ds18b20_Display();
/ X# G; O# a2 s& { }
8 Q" `- @+ C" W) U$ Z3 y if(clocksetup !=1 && P3_3 == 0) //进入时间设置
% H+ ?* }- Z/ ]+ M8 a {
3 A7 o* `8 p6 k timesetup = 1;
: ?/ J; y7 h; `0 B1 x) | position++;
9 W. Z( ?- d2 L( X- L U1 f* i if(position == 4) //向DS1302重新写入时间
3 G. e, Q- f9 a/ @ {7 ?( ^3 ~) O+ C* V5 v# M
TimeWeite();3 W. M3 s. C; w4 S! c
}* q- k5 U; L$ j6 @4 x# v6 E
while(!P3_3);
' K, V# Z) W+ o6 o T, l, s }
3 f& Q- U" }/ U3 [) ~% @1 c if(timesetup !=1 && P3_2 == 0) //进入闹钟时间设置
" M! @1 g& Q# U+ y* N- |. |% x {
, _% I- c W6 M9 T4 H clocksetup = 1;4 a2 X8 R9 i* k2 [2 H
position++;& Y' E) @1 ?1 e2 ^) d! O( @* Z
clock = 0;) B$ S5 B' U1 c8 I
while(!P3_2);8 l1 K" |) c0 }. J" I3 W: u1 i; q
}
" l& r! o h9 B ~9 @5 d# G if((timesetup==1||clocksetup==1) && P3_0 == 0) //进入时间设置, 时间+1
6 i. `0 ?" |& e6 _6 ]1 P { 7 {- n0 ]. }( {7 d. k0 Q
if(timesetup) //实时时钟设置
9 l5 r0 }+ B: X9 R- O' v& l {
3 T3 P2 P+ G( C! s, i8 S; ^ if(position == 1) //秒& W( W5 \+ j% b3 D8 o$ l4 I
{+ `$ R+ {! r* o& R& ^2 b6 X, Z7 D
if(++num[7] >= 10)* {) D1 [7 g: A( m( q1 c
{9 U* G' R7 |/ `% b8 ]9 D
num[7] = 0;
2 ?" m# g5 @2 ~. s* G# l if(++num[6] >=6)2 P9 U: u( w# @" W: U7 U
num[6] = 0;
5 r1 w1 B$ z" e+ H' s6 u/ q }
4 Z/ K% m2 N. K0 ] }else. A/ ~! @8 ^) h9 q
if(position == 2) //分; M- X* j8 h0 G+ P0 s8 I$ D
{
; C$ U* {0 V4 `# Q! m if(++num[4] >= 10)
% o6 ~; f$ z% W; s1 h {. I9 [& d$ L6 z6 n- E6 P
num[4] = 0;
1 J0 T' d" I# l- j2 H- e" \ if(++num[3] >=6)
2 q" G* t) r- }: s/ C4 U num[3] = 0;
1 F- [2 I2 {( E* ^0 f+ Q }
$ K% F* r# R. u! Q* w2 S1 U' n, Q }else- R2 l9 H/ l a; v' L
if(position == 3) //时9 |7 e' Q- K, e
{' H- X, S- x4 |4 ~2 j8 w
if(num[0] == 2)
7 _- r: o* ~3 A8 Y0 h {
: g8 p: N0 u4 H5 p3 }3 ^ if(++num[1] >= 5)
# I5 Z* x \0 T7 J6 l* X) x {1 _- a0 s) e% A. K# _
num[1] = 0;
. I* J3 `+ s$ P y' _5 g1 b num[0] = 0;% N4 M2 B( Y# a0 E x
} z7 y* k2 }0 _
}else
7 i4 B) X) Y1 ^! @4 C if(++num[1] >= 10)
0 ~- R* ^1 }7 O g8 {$ V {
f0 e. Y6 w9 ] L$ C$ E8 S num[1] = 0;
. x8 T. P. I. ~$ I1 s# Z. h) a if(++num[0] >=3)
- B$ {- o$ o% _/ I9 j$ L; T( ? num[0] = 0;
* d) O( R0 p3 V6 }$ L5 Q2 h. } }+ @5 P4 g( J# t) ?0 {0 I
}0 I. X$ q/ I8 f0 Y- V
}else if(clocksetup) //闹钟时间设置
$ l$ G7 p1 g8 e! I {* ?* S2 a9 R0 L! l
if(position == 1) //秒
8 q) | j4 y6 ~& E; ~ {
# t8 N( e/ k+ j* }& O8 f, G4 [: ?) q if(++timeclock[7] >= 10)( D( g% ~. p1 z) Q! J* [% {
{
, Z5 b* l2 @' v; V$ P* p q5 q/ T7 Z timeclock[7] = 0;
/ |; |) m! ]1 i8 H if(++timeclock[6] >=6) q& |* M, i0 R& ^0 O8 Q
timeclock[6] = 0;1 h! `& P. k- h$ `0 [+ t
}0 A6 }# a( k: O# w, K
}else
! Y" F8 ~- R( g if(position == 2) //分( p1 n- A6 [& r
{0 _' z9 c: E% h" F4 S" u2 B! c5 V6 U
if(++timeclock[4] >= 10)) F& ]: I# b( w/ N' p
{0 c! k% J1 V7 i8 n# h. \. D! H2 a. a
timeclock[4] = 0;+ n o! e* @2 E. m- P
if(++timeclock[3] >=6)7 v, t, Q$ V/ w5 e
timeclock[3] = 0;
5 ?" m/ P, r' y }- [* k! F+ Q! Q- `1 |- ?5 E# K# Y
}else
/ f1 F5 g2 w, ] if(position == 3) //时
* g. K5 \9 i Z& }1 l0 N1 _- T {5 x. s9 {6 n" A& P
if(timeclock[0] == 2)4 k1 z' p" u3 ]' b- t- d+ C+ U. |
{; y( f* R/ ^' p8 \% t \
if(++timeclock[1] >= 4), l: ^7 b: S6 z) `% S
{! v+ h# v: N2 o* l u
timeclock[1] = 0;1 W2 r$ O- i9 @0 l
timeclock[0] = 0;) B2 [) b+ i5 E7 A
}
9 _/ h5 O5 ~" F- J+ g }else
8 b; R' B5 |4 Q* ], {9 C/ i; J if(++timeclock[1] >= 10)8 \! U) q/ K; ^6 {5 u
{1 y$ y0 ?6 D. w: } [
timeclock[1] = 0;1 i1 x: n) A: L2 J7 f8 X' B- ]
if(++timeclock[0] >=3), O' B/ R: Y" g m) j& |# {2 j
timeclock[0] = 0;
& N K+ f0 @3 v+ l' U2 c }% M( F$ B/ O7 Q2 I. ~5 x1 w
}
( p& F; @5 a5 o, o# y! I }) [$ e" C9 C1 t+ F* n( T
while(!P3_0);
3 l. G6 H# X* C# i' k7 ^2 n }! Z5 [. h: }0 h' X3 h% I8 a: }
if((timesetup==1||clocksetup==1) && P3_1 == 0) //进入时间设置, 时间-1
8 J0 m0 q0 z2 k. g" w4 J { ' A/ F& [! l; M; N0 D) k' j& C
if(timesetup) //实时时钟设置
& ~" h0 `- Y8 j9 t* y {
. _: @: ~- j3 I* t/ p if(position == 1) //秒
+ C8 u O1 J" T) r( U0 K; q9 P, p {2 @1 v: I5 t' P
if(--num[7] < 0)$ _1 u# p( {" ?. g2 a6 G ^( h
{$ F! t$ D- U* e2 H( ]
num[7] = 9;
( F. u' p8 D& ~6 E5 k if(--num[6] < 0)" x$ k; J9 } b5 U" A4 d6 c
num[6] = 5;( T c0 i ^1 u$ U4 A3 x( _+ ~
}' i8 _: B0 q/ I1 N+ w9 A* ^
}else/ H2 Q0 y5 u, B, p
if(position == 2) //分9 t6 s8 h; i$ A4 d) a7 h! G0 L' m
{& F7 S' Y) {% I! r* s5 o
if(--num[4] < 0)
1 `( N; h R1 y2 k {
* A$ Y* w5 Y0 s$ ] num[4] = 9;4 [' ^2 l/ X6 G- H2 ~7 d
if(--num[3] < 0)
5 A; \8 b6 v2 s% F num[3] = 5;
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}else
+ n' P7 ]4 U8 I; Y( | if(position == 3) //时
p( W f6 H% ^6 x2 G' N {
e% W; P% d$ s# d6 v& T( k. U$ X if(--num[1] < 0)+ P9 H( }+ h- Y4 U$ T5 m3 H
{
8 b& w2 B% @/ Y num[1] = 9;
" ?4 e% n* j# s! L if(--num[0] < 0)& ]( C; P# _7 X6 Z
{: c8 r% h$ t' \
num[0] = 2;
2 u8 }* f) a4 y! ~5 o/ W……………………# \7 j" Y# a) h1 @
0 _# T8 T. i, M. c…………限于本文篇幅 余下代码请从eda365.com下载附件…………
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