ช่วยดู code ของเครื่องแยกเหรียญหน่อยครับ ^^

[markas]

#include<reg51.h>         
2   unsigned int patt[]={1,2,4,8};      
3
4   sbit E=P3^6;            
5   sbit RS=P3^7;            
6
7   sbit coin1=P3^0;         
8   sbit coin5=P3^1;         
9   sbit coin10=P3^2;         
10
11
12   int count=0;             
13
14   int count1=0;            
15   int count5=0;            
16   int count10=0;            
17   char status=1;            
18
19   int xx,cc;
20   void delay(unsigned int  count)
21   {
22     for( count = count ; count >0 ; count--);   
23   }
24                                                                                                                     
25
26   void clock (void)
27   {
28      E=1;      
29      delay(200);
30      E=0;      
31      delay(200);
32   }
33
34   void write (unsigned char a)
35   {
36      RS=1;   
37      P2=a;
38      clock();
39      RS=0;   
40   }
41
42   void clr(void)                 
43   {
44
45      RS=0;   
46      P2=0x01;
47      clock();
48
49   }
50
51   void inilcd(void)       
52   {
53
54      delay(20000);
55   
56      RS=0;    
57      P2=0x38;   
58      clock();
59       
60           clr();   
61
62      P2=0x0d;
63      clock();
64
65      P2=0x06; 
66      clock();
67   }
68
69
70   void  showcointolcd(void)         
71   {                  
72
73      P2=0x80;            
74      clock();            
75      write('a');            
76      write('l');            
77      write('l');            
78      write('=');            
79      xx=count10*10+(count5*5)+count1;   
80
81      write(((xx/1000))+0x30);
82      write(((xx%1000)/100)+0x30);   
83      write(((xx%100)/10)+0x30);   
84      write(((xx%10))+0x30);
85      write(',');
86
87      xx=count1;
88      write('c');
89      write('o');
90      write('i');
91      write('n');
92      write(' ');
93      write('1');
94      write('B');
95      write('=');
96      write(((xx/100))+0x30);
97      write(((xx%100)/10)+0x30);
98      write(((xx%10))+0x30);
99
100
101
102      P2=0xc0;
103      clock();
104      xx=count5;
105      write('c');
106      write('o');
107      write('i');
108      write('n');
109      write(' ');
110      write('5');
111      write('B');
112      write('=');
113      write(((xx/100))+0x30);
114      write(((xx%100)/10)+0x30);
115      write(((xx%10))+0x30);
116
117
118      write(',');
119      xx=count10;
120      write('1');
121      write('0');
122      write('B');
123      write('=');
124      write(((xx/100))+0x30);
125      write(((xx%100)/10)+0x30);
126      write(((xx%10))+0x30);
127
128
129
130   }
131
132
133
134   void main(void)
135   {
136
137       inilcd();
138
139   showcointolcd();
140
141   st:
142
143
144    P0=patt[count];
145       count++;
146    if(count>3){count=0;}
147       147cc=0;
148    while(cc<2000)
149      {
150         cc++;
151          if(coin1==0)
152             {  count1++;
153                delay(2000);
154                while(coin1==0);
155                showcointolcd();
156       }
157          else
158          if(coin5==0)
159          { 
160                count5++;
161                delay(2000);
162                while(coin5==0);
163                showcointolcd();
164       }
165    else
166          if(coin10==0)
167          {
168                count10++;
169                delay(2000);
170                while(coin10==0);
171                   showcointolcd();
172          }
173   
174   }
175
176
177
178   goto st;
179
180   }
181