51实现计算器.docx

1、51实现计算器/* * Easy calculator * * K4:+ K8:- K12:* K16:/ K14:Clear K15:= * * Made by Kingst-刚哥 */#include typedef unsigned char uint8;typedef unsigned int uint16;typedef unsigned long uint32;typedef char int8;typedef int int16;typedef long int32;sbit KeyIn1 = P24;sbit KeyIn2 = P25;sbit KeyIn3 = P26;sbi

2、t KeyIn4 = P27;sbit KeyOut1 = P23;sbit KeyOut2 = P22;sbit KeyOut3 = P21;sbit KeyOut4 = P20;sbit ADDR0 = P10;sbit ADDR1 = P11;sbit ADDR2 = P12;sbit ADDR3 = P13;sbit ENLED = P14;sbit BUZZ = P16;#define FADD 10#define FSUB 11#define FMUL 12#define FDIV 13#define FRES 14#define FEQU 15#define KEY_DELAY

3、300#define BUZ_DELAY 80code uint8 Ledcode13=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,0xbf,0x86;uint8 Led_n=0;uint8 Led_buf6;float Tmp1=0, Tmp2=0;int8 C_flag=0;/* * 延时*/void delay(uint16 n) while (n-);/* * 蜂鸣器发声*/void buzzer_sound(void) uint16 i; for (i=0; i 0) buzzer_sound(); return va

4、l;/* * 验证数据有效性*/bit check_num(float f_num) if (f_num = 100000) return 1; return 0;/* * 制作数码管错误标志*/void make_led_error(void) int8 i; for (i=0; i5; i+) Led_bufi = Ledcode10; Led_buf5 = Ledcode12;/* * 制作数码管整数数据*/void make_led_inumber(int32 i_num) bit s_flag=0; int16 sit; int8 i; if (i_num =1; i-, sit/=

5、10) if (i_num = sit) break; Led_bufi = Ledcode10; i_num -= i_num/sit*sit; for (;i=1; i-, sit/=10) Led_bufi = Ledcodei_num/sit; i_num -= i_num/sit*sit; Led_buf0 = Ledcodei_num & 0x7F; if (s_flag) Led_buf5 = Ledcode11; else Led_buf5 = Ledcode10; ET0 = 1;/* * 制作数码管浮点数据*/void make_led_fnumber(float f_nu

6、m) bit s_flag=0; int32 num; int16 sit; int8 i, decimal, dot_sit=0; if (f_num 0; decimal-) if (num % 10 != 0) break; num /= 10; dot_sit = decimal; if (f_num = 10000) dot_sit = 0; else if (f_num = 1000) if (decimal = 1) dot_sit = 1; else if (f_num = 100) if (decimal = 2) dot_sit = 2; else if (f_num =

7、10) if (decimal = 3) dot_sit = 3; for (i=0; i=1; i-, sit/=10) if (num = sit) break; if (i = dot_sit) break; Led_bufi = Ledcode10; num -= num/sit*sit; for (;i=1; i-, sit/=10) Led_bufi = Ledcodenum/sit; num -= num/sit*sit; Led_buf0 = Ledcodenum; Led_bufdot_sit &= 0x7F; if (s_flag) Led_buf5 = Ledcode11

8、; else Led_buf5 = Ledcode10; ET0 = 1;/* * 数码管显示*/void show_num(uint8 *buf) ENLED = 1; switch (Led_n) case 0: ADDR0 = 0; ADDR1 = 0; ADDR2 = 0; P0 = buf0; break; case 1: ADDR0 = 1; ADDR1 = 0; ADDR2 = 0; P0 = buf1; break; case 2: ADDR0 = 0; ADDR1 = 1; ADDR2 = 0; P0 = buf2; break; case 3: ADDR0 = 1; ADD

9、R1 = 1; ADDR2 = 0; P0 = buf3; break; case 4: ADDR0 = 0; ADDR1 = 0; ADDR2 = 1; P0 = buf4; break; case 5: ADDR0 = 1; ADDR1 = 0; ADDR2 = 1; P0 = buf5; break; ENLED = 0; if (Led_n = 5) Led_n = 0; else Led_n+;/* * 计算程序*/void calculate(int8 key_val) float ans; bit err=0; if (key_val = FADD) & (key_val = F

10、DIV) C_flag = key_val; else if (key_val = FEQU) switch (C_flag) case FADD: ans = Tmp1+Tmp2; break; case FSUB: ans = Tmp1-Tmp2; break; case FMUL: ans = Tmp1*Tmp2; break; case FDIV: if (Tmp2 = 0) err = 1; break; else ans = Tmp1/Tmp2; break; if (check_num(ans) err = 1; if (err) make_led_error(); else m

11、ake_led_fnumber(ans); C_flag = 0; Tmp1 = 0; Tmp2 = 0; else if (key_val = FRES) make_led_fnumber(0); C_flag = 0; Tmp1 = 0; Tmp2 = 0; else if (C_flag = 0) ans = Tmp1; ans *= 10; ans += key_val; if (check_num(ans) return; else Tmp1 = ans; make_led_inumber(Tmp1); else ans = Tmp2; ans *= 10; ans += key_v

12、al; if (check_num(ans) return; else Tmp2 = ans; make_led_inumber(Tmp2); main() int8 key_val; ADDR3 = 1; ENLED = 0; make_led_inumber(0); TMOD = 0x01; TH0 = 0xF8; TL0 = 0xCC; TR0 = 1; ET0 = 1; EA = 1; while (1) key_val = scan_key(); if (key_val = -1) continue; calculate(key_val); void time0() interrupt 1 TR0 = 0; TH0 = 0xF8; TL0 = 0xCC; show_num(Led_buf); TR0 = 1;