《专业综合实践》实习报告单片机智能数字钟设计

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1、实 习 报 告实习名称： 专业综合实践 学生姓名： 学院名称： 电气与信息工程学院 专业班级： 电子XX41 学 号： 10位学号 成 绩 评 定考核内容实习表现实习报告实习成果或答辩综合评定成绩成绩2011年7月20日实习纪律要求和成绩考核办法（纪律要求和成绩考核办法在封皮背面打印）1实习必须听从教师指导，严格遵守安全操作规程。不准违规操作，未经指导教师允许不准启动任何非自用设备、仪器、工具等；操作项目和内容必须按实习要求进行，特别要注意防止电烙铁烧烫伤、不用时要及时切断电源。2实习教室内不准吸烟、吃零食，不准带无关人员到实习教室活动，否则扣平时表现分。3参加本次实习时间不足三分之二或旷课3

2、天以上者，不得参加本次考核，按不及格处理。4病事假必须有请假条，需经班主任或有关领导批准，否则按旷课处理。5实习过程考核和实习成绩在教师手册中要有记载。6实习成绩的考核由指导教师根据实习表现（出勤、遵守纪律情况等）、实习报告、实习成果、现场操作、口试或笔试等几个方面，给出各项成绩或权重，综合后给出实习总成绩。该实习经考核教研室主任审核，主管院长审批备案。7成绩评定采用五级分制，即优、良、中、及格、不及格。8实习结束一周内，指导教师提交实习成绩和实习总结。实习报告要求实习报告内容、格式各专业根据实习类别（技能实习、认识实习、生产实习、毕业实习等）统一规范，经教研室主任审核、主管院长审批备案。注意

3、： 1实习任务书和实习指导书在实习前发给学生，实习任务书放置在实习报告封面后和正文目录前。2为了节省纸张，保护环境，便于保管实习报告，统一采用A4纸，实习报告建议双面打印（正文采用宋体五号字）或手写，左侧装订，订两个钉。智能数字钟的设计一、设计任务与要求1.设计功能：1）. 全日历计时。2）. 12/24小时转换。3）. 8路定时输出（可关/开控制）4）. 误差：15S+1uS5）. 大、小月，润年，周，自动追踪2. 调校：上电后，电子钟显示“1：00”。1）. 8路定时时间查询按下K1键依此显示8路定时时间。星期位显示：“H”表示：打开当前定时输出；“L” 表示：关闭当前定时输出。此时按K2

4、键可进行“H”、“L”的切换。所有输出，均由蜂鸣器输出！2）. 显示状态的控制按下K2键可进入以下工作状态：12小时/ 日月交替显示。12小时固定显示。24小时/ 日月交替显示。24小时固定显示。3）. 校时按下K2键3S后，进入校时菜单。按下K1键依次进入校时状态：分、时、天、月、年、微调系数。此时按K2键，完成+1。当显示“d”时，表示要调整微调系数（0-99），其值越小，时钟走时越慢。当使用的6MHz的晶振偏差大时，应仔细调整微调系数！当显示“out”时，按K2键，即可退出！退出后，按任意键即可启动时钟。4）. 设置定时时间按下K1键3S后，进入设置菜单。按下K1键依次进入8路定时调整状

5、态：时、分。此时按K2键，完成+1。当显示“out”时，按K2键，即可退出！3.使用单片机89C2051完成。4.原理图和双面PCB图。5.源程序烧录、调试。6.焊接、安装、调试、验收。;*;all_clk1 _program 2010-3-25;*fl_250ms bit 00hfl_500ms bit fl_250ms+1set_clk_f bit fl_500ms+1set_al4_f bit set_clk_f+1am_f bit set_al4_f+1fl_3s bit am_f+1al1_f bit fl_3s+1al2_f bit fl_3s+2al3_f bit fl_3s+3

6、al4_f bit fl_3s+4set_over bit al4_f+1 ha_f bit set_over+1ha_over bit ha_f+1fl_ms_f bit ha_over+1fl_s_f bit fl_ms_f+1 key_over bit fl_s_f+1;* key_data equ 08htimers equ key_data+1t_30ms equ timers+1t_20ms equ t_30ms+1t_1s equ t_20ms+1k1_data equ t_1s+1k2_data equ k1_data+1stat_work equ k2_data+1stat_

7、led equ stat_work+1t_1ms equ stat_led+1t_20m equ t_1ms+1 beep equ t_20mal1 equ beep+1al2 equ beep+2al3 equ beep+3al4 equ beep+4al5 equ beep+5al6 equ beep+6al7 equ beep+7al8 equ beep+8ret_timer equ al8+1;* sec equ 23hmin equ sec+1hhour equ min+1hday equ hour+1hmon equ day+1hyear equ mon+1hw_adj equ y

8、ear+1h week equ w_adj+1h;*al1_h equ week+1hal1_m equ al1_h+1hal2_h equ al1_m+1hal2_m equ al2_h+1hal3_h equ al2_m+1hal3_m equ al3_h+1hal4_h equ al3_m+1hal4_m equ al4_h+1hal5_h equ al4_m+1hal5_m equ al5_h+1hal6_h equ al5_m+1hal6_m equ al6_h+1hal7_h equ al6_m+1hal7_m equ al7_h+1hal8_h equ al7_m+1hal8_m

9、 equ al8_h+1hbeep_t equ al8_m+1frist equ beep_t+1;* led1 equ frist+1led2 equ led1+1led3 equ led2+1led4 equ led3+1led5 equ led4+1sp_data equ led5+1;* led_1 bit p3.5led_2 bit p3.4led_3 bit p3.3led_4 bit p3.2led_5 bit p3.1beep_f BIT P3.7key_f bit p3.0;* t_h_100ms equ 05dh ;100 ms for 6MHzt_l_100ms equ

10、07fh ;c6 for 100ms timer_no equ 8d ;3c90+30d=3cb0hw_adj_dat equ 50dkey_da equ 00000110b;* blk_led equ 20d dot_led equ 21d f_led equ 22d n_led equ 23d u_led equ 24d t_led equ 25d b_led equ 26d d_led equ 27d ORG 0000H; ;SJMP start ORG 0003H; ;reti;ORG 000BH ;ajmp t0reti ;ORG 0013H reti ;ORG 001BH ;aJM

11、P T1 ;ORG 0023H ;RETI; AJMP RS_485 ;* start: call clr_ramMOV SP,#sp_data ;call int_t0call timer_intcall timer_20msSTAR_BI:call clock call week_autocall al_outCALL KEY_bordcall key_del call set_clk_alcall key_jmp call rebackcall led_jmpsjmp star_bi ;*reback:mov a,stat_workjz reback_endjb al1_f ,ka1mo

12、v ret_timer,secsetb al1_f sjmp reback_endka1: mov a,ret_timeradd a,#05dmov b,#60ddiv abmov a,seccjne a,b,reback_endclr al1_fmov stat_work,#00dreback_end:retkey_jmp:mov a,key_datajz key_jmp_end mov ret_timer,seccjne a,#01d,kk1mov a,stat_workinc a ;k1_keycjne a,#9d,kka1mov a,#00dkka1: mov stat_work ,a

13、sjmp key_jmp_end kk1:mov a,stat_work ;k2_keyjnz kk2mov a,stat_ledinc acjne a,#05d,kka2mov a,#00dkka2:mov stat_led,asjmp key_jmp_endkk2:acall all1cpl amov r0,akey_jmp_end:retall1:mov r0,#al1mov a,stat_workdec aadd a,r0mov r0,amov a,r0retled_jmp:;*;mov stat_work,#01d;mov stat_tw,#01dmov a,stat_workjnz

14、 led_al1mov a,stat_ledacall led_t_d mov led1,weeksjmp led_jmp_endled_al1:acall all1mov led1,#f_ledjnz le_t2mov led1,#n_ledle_t2:jb fl_250ms ,le_t4mov led1,#blk_ledle_t4:acall al_led led_jmp_end:acall ledret;*time_24:mov a,houracall bcd_8mov led2,ajnz tim4mov led2,#blk_ledtim4:mov led3,bjb fl_500ms,t

15、im1mov a,badd a,#10dmov led3,a tim1: acall led_mintime_12_end:ret;* led_min:mov a,minacall bcd_8jb fl_500ms ,tim2add a,#10dtim2: mov led4,amov led5,bret;*date_led:mov a,monacall bcd_8mov led2,ajnz da1mov led2,#blk_ledda1: mov a,badd a,#10dmov led3,amov a,dayacall bcd_8mov led4,ajnz da2mov led4,#blk_

16、ledda2: mov led5,bdate_led_end:ret;*; D_8=BCD;*BCD_8: MOV B,#10DDIV ABRET;*LED: mov p1,#0mov dptr,#led_asc;*led1mov a,led1movc a,a+dptrmov p1,aclr led_1acall timer_1msacall timer_1ms;acall timer_1ms;acall timer_1ms;acall timer_1mssetb led_1;*led2 led_led2:mov a,led2movc a,a+dptrmov p1,aclr led_2acal

17、l timer_1mssetb led_2;*led3 led_led3:mov a,led3movc a,a+dptrmov p1,aclr led_3acall timer_1mssetb led_3;*led4 led_led4:mov a,led4movc a,a+dptrmov p1,aclr led_4acall timer_1mssetb led_4;*led5 led_led5:mov a,led5movc a,a+dptrmov p1,aclr led_5acall timer_1mssetb led_5;* led_end:mov p1,#0ret;*; bafhcdeg

18、led_asc:db 11101110B;0db 10001000B;1db 11000111B;2db 11001101B;3db 10101001B;4db 01101101B;5db 01101111B;6db 11001000B;7db 11101111B;8db 11101101B;9db 11111110B;0. =10ddb 10011000B;1.db 11010111B;2.db 11011101B;3.db 10111001B;4.db 01111101B;5.db 01111111B;6.db 11011000B;7.db 11111111B;8.db 11111101B

19、;9.DB 00000000B;BLACK=20dDB 00010000B;dot=21dDB 00100110b;l=22ddB 10101011B;h=23dDB 10101110B;u=24dDB 00100111B;t=25ddB 00101111B;b=26ddB 10001111B;d=27d; bafhcdeg ;*;delay;*timer_1ms:mov t_1ms,#030hr2_1: djnz t_1ms , r2_1 rettimer_20ms:mov t_20m,#050dr2_2: call clockcall leddjnz t_20m , r2_2 call w

20、eek_autocall al_outret;#;if monweek=mod(5/4*year+mon_asc(mon)+day-1)/7;else; gs2=week=mod(5/4*year+mon_asc(mon)+day)/7week_auto: mov a,YEARmov b,#05mul abmov r4,bmov r5,amov r7,#04call mul_2MOV DPTR,#MON_ASCMOV A,MONdec aMOVC A,A+DPTRADD A,r3;*MOV B,DAYADD A,Bmov r3,a;r3=gs2;*jb mon=2 *MOV A,MONCJNE

21、 A,#02D,WEEK_1SJMP WEEK_2WEEK_1:JC WEEK_2week_3: mov a,r3mov b,#07div abmov a,bsjmp week_4WEEK_2:;*jb year=4N *mov a,yearmov b,#04div abmov a,bjnz week_3mov a,r3dec amov b,#07div abmov a,b week_4:MOV WEEK,ajnz week_endmov week,#07hweek_end: RETMON_ASC:DB 6d, 2d, 2d, 5d, 0d, 3d, 5d, 1d, 4d, 6d, 2d, 4

22、d ;2002.5.5;r4r5/r7=r3mul_2:D457: CLR CMOV A,R4SUBB A,R7JC DV50SETB OV RETDV50: MOV R6,#8 ;；求平均值（R4R5R7R3）DV51: MOV A,R5RLC AMOV R5,AMOV A,R4RLC AMOV R4,AMOV F0,CCLR CSUBB A,R7ANL C,/F0JC DV52MOV R4,ADV52: CPL CMOV A,R3RLC AMOV R3,ADJNZ R6,DV51MOV A,R4 ;；四舍五入ADD A,#0;R4JC DV53SUBB A,R7JC DV54DV53: I

23、NC R3DV54: CLR OVRET;*clr_ram:MOV R7,#78h ;MOV R0,#0bH ;CLR A ;CR: INC R0 ;MOV R0,A ;djnz r7,cr ;CLR RAMret;* INT_CTRLint_t0:setb et1MOV TMOD,#00010001b ;mov w_adj,#w_adj_datsetb eajmp adj_w;*al_led:mov r0,#al1_hmov a,stat_workdec arl aadd a,r0mov r0,amov a,r0acall bcd_8mov led2,ajnz al_1mov led2,#b

24、lk_ledal_1:mov a,badd a,#10dmov led3,ainc r0mov a,r0acall bcd_8add a,#10dmov led4,amov led5,bal_led_end:ret;*set_clk_al:jnb set_clk_f,see1call set_clockclr set_clk_fsjmp see2see1:jnb set_al4_f,see2call set_al4clr set_al4_fsee2: ret ;*proc led_t_dled_t_d:mov dptr,#led_ord_3mov b,#02hmul abjmp a+dptrl

25、ed_ord_3: ajmp led_k0_2ajmp led_k1_2ajmp led_k2_2ajmp led_k3_2ajmp led_k4_2led_k0_2: ; timer_12 and date to ledacall time_12jnb fl_3s ,lk1acall date_led lk1:ajmp led_jmp_5_endled_k1_2: ; timer_12 to ledacall time_12ajmp led_jmp_5_endled_k2_2: ;timer_24and date to led acall time_24jnb fl_3s ,lk2acall

26、 date_led lk2:ajmp led_jmp_5_endled_k3_2: ;timer_24to ledacall time_24ajmp led_jmp_5_endled_k4_2: ;sec to ledmov led1,#blk_ledmov led2,#blk_ledmov led3,#dot_ledmov a,secacall bcd_8add a,#10dmov led4,amov led5,b led_jmp_5_end: retend;*proc set_al4set_al4:mov k1_data,#01dmov k2_data,#01dclr set_over a

27、call led_alacall key_bordcall sf_keymov key_data,#0mov frist,#0set_al41:call clockcall week_autoacall led_alacall key_bordcall key_delacall key_aljnb set_over,set_al41 clr amov k1_data,amov k2_data,amov key_data,amov frist,aretend;*proc key_alkey_al:mov a,key_datajz key_al_endcjne a,#01d,k2_alinc k1

28、_data ;(1-9)mov a,k1_datacjne a,#19d,key_al_endmov k1_data,#01dsjmp key_al_end k2_al:mov a,k1_datacjne a,#018d,ke2setb set_oversjmp key_al_endke2: mov r0,#al1_hdec aadd a,r0mov r0,ainc r0acall jj_bitmov b,#24djnz ke3 mov b,#60dke3:mov a,r0div abmov a,bmov r0,akey_al_end:retend jj_bit:mov a,k1_datamo

29、v b,#02ddiv abmov a,b ;(a=1,0)ret;* led_out1:mov led2,#00hmov led3,#u_ledmov led4,#t_ledmov led5,#blk_ledmov led1,#blk_ledret;*led_al:mov a,k1_datacjne a,#017d,lo1acall beep_timer sjmp led_al_endlo1: cjne a,#18d,ld1acall led_out1sjmp led_al_endld1: inc amov b,#02ddiv ab;*mov led1,a;*dec arl amov r0,

30、#al1_hadd a,r0mov r0,amov a,r0acall bcd_8mov led2,ajnz ld2mov led2,#blk_ledld2: mov a,badd a,#10dmov led3,a;* inc r0mov a,r0acall bcd_8add a,#10dmov led4,amov led5,b;*flash bitjb fl_250ms,led_al_endacall jj_bitjnz led_al_emov led4,#blk_ledmov led5,#blk_ledsjmp led_al_endled_al_e:mov led2,#blk_ledmov

31、 led3,#blk_ledled_al_end:acall ledret;*proc set_clockset_clock:mov k1_data,#01dmov k2_data,#01dclr set_over call led_clcall key_bordcall sf_keymov key_data,#0mov frist,#0set_al41:call clockacall week_autocall al_outacall led_clacall key_bordcall key_delacall key_cljnb set_over,set_al41 ;acall key_bo

32、rdclr amov k1_data,amov k2_data,amov key_data,amov frist,aretend;*proc key_clkey_cl:mov a,key_datajz key_al_endcjne a,#01d,k2_alinc k1_data ;(1-8)mov a,k1_datacjne a,#9d,key_al_endmov k1_data,#01dsjmp key_al_end k2_al:mov a,k1_datacjne a,#08d,ke2setb set_oversjmp key_al_endke2: dec amov dptr,#asc_hm

33、ovc a,a+dptrmov b,a ;* mov r0,#secmov a,k1_datadec aadd a,r0mov r0,ainc r0mov a,r0div abmov a,bmov r0,akey_al_end:retend asc_h:db 60d,60d,24d,32d,13d,100d,100dproc led_clled_cl:mov dptr,#led_ord_3mov a,k1_datadec amov b,#02hmul abjmp a+dptrled_ord_3: ajmp led_k0_2ajmp led_k1_2ajmp led_k2_2ajmp led_k

34、3_2ajmp led_k4_2ajmp led_k5_2ajmp led_k6_2ajmp led_k7_2led_k0_2: ; led secmov led2,#blk_ledmov led3,#dot_ledmov a,secacall bcd_8add a,#10dmov led4,amov led5,bjb fl_250ms ,lk1mov led4,#blk_ledmov led5,#blk_led lk1: ajmp led_jmp_5_endled_k1_2: ; led min,houracall led_hourjb fl_250ms ,lk2mov led4,#blk_

35、ledmov led5,#blk_led lk2: ajmp led_jmp_5_endled_k2_2: ;led min,hour acall led_hourjb fl_250ms ,lk3mov led2,#blk_ledmov led3,#blk_led lk3: ajmp led_jmp_5_endled_k3_2: ;led day,monacall led_monjb fl_250ms ,lk4mov led4,#blk_ledmov led5,#blk_led lk4: ajmp led_jmp_5_endled_k4_2: ; led day,monacall led_mo

36、njb fl_250ms ,lk5mov led2,#blk_ledmov led3,#blk_led lk5: ajmp led_jmp_5_endled_k5_2: ; led yearmov led2,#2dmov led3,#0dmov a,yearacall bcd_8mov led4,amov led5,bjb fl_250ms ,lk6mov led4,#blk_ledmov led5,#blk_led lk6: ajmp led_jmp_5_endled_k6_2: ;led w_adj mov led2,#d_ledmov led3,#blk_ledmov a,w_adjac

37、all bcd_8mov led4,amov led5,bjb fl_250ms ,lk7mov led4,#blk_ledmov led5,#blk_led lk7: ajmp led_jmp_5_endled_k7_2: ;led outacall led_out1led_jmp_5_end:mov led1,weekacall ledretendled_hour:mov a,houracall bcd_8mov led2,ajnz lj1mov led2,#blk_led lj1: mov a,badd a,#10dmov led3,a;* mov a,minacall bcd_8add

38、 a,#10dmov led4,amov led5,bretled_mon:mov a,monjnz lj5inc monmov a,mon lj5:acall bcd_8mov led2,ajnz lj2mov led2,#blk_ledlj2: mov led3,b;* mov a,dayjnz lj4inc daymov a,day lj4:acall bcd_8mov led4,ajnz lj3mov led4,#blk_led lj3: mov led5,bret;*al_out:jb ha_over,al_out_endmov r7,#8dmov r1,#al8_m al_ch_1

39、:mov r0,#minmov r6,#02d ;min houral_l:mov a,r0mov b,r1cjne a,b ,al_chinc r0dec r1djnz r6 ,al_l ;*mov a,r7dec amov r0,#al1add a,r0mov r0,amov a,r0mov c,acc.0cpl canl c,fl_250mscpl cmov beep_f,c acall beep_out al_ch: clr cmov a,r1subb a,r6mov r1,adjnz r7,al_ch_1al_out_end:retbeep_out:jb ha_f,ba1mov be

40、ep,secsetb ha_f ba1:mov a,beepadd a,beep_tmov b,#60ddiv abmov a,seccjne a,b,beep_out_endsetb beep_fsetb ha_overclr ha_fbeep_out_end:rettimer_int:MOV T_1S,#TIMER_nomov beep_t,#15dmov year ,#01dmov mon , #011dmov day , #06dmov hour ,#13dmov min , #00dmov sec , #00dmov r7,#16mov dptr ,#al_ascmov r0,#al

41、1_hal_read:clr amovc a,a+dptrmov r0,ainc r0inc dptrdjnz r7,al_readret;*beep_timer:mov led1,#blk_ledmov led2,#b_ledmov led3,#blk_ledmov a,beep_tacall bcd_8mov led4,amov led5,bjb fl_250ms,ft1mov led4,#blk_ledmov led5,#blk_ledft1:ret time_12:mov dptr,#asc_12mov a,hourrl amovc a,a+dptrmov led2,ajnz iu2m

42、ov led2,#blk_led iu2: inc dptrmov a,hourrl amovc a,a+dptrjb fl_500ms ,iu1add a,#10d iu1: mov led3,a;* min to ledacall led_mintime_24_end:retasc_12:db 11d,2d,21d,1d,21d,2d,21d,3d,21d,4d,21d,5d,21d,6d,21d,7ddb 21d,8d,21d,9d,11d,0d,11d,1ddb 1d,2d,0d,1d,0d,2d,0d,3d,0d,4d,0d,5d,0d,6d,0d,7d,0d,8d,0d,9ddb

43、1d,0,1d,1dclock:;*mov a,sec cjne a,#60d,clock_end;!mov sec,#00hinc min;*clr ha_over ;2001.5.6mov a,mincjne a,#60d,clock_endmov min,#00hinc hourmov a,hourcjne a,#24d,clock_endmov hour,#00hmov a,monxrl a,#02djnz mm_1mov dptr,#year_dmov a, yearmovc a,a+dptrsjmp mm_2mm_1:mov a,mondec a mov dptr,#mou_12m

44、ovc a,a+dptrmm_2:mov b,ainc binc day ;*day+1mov a,daycjne a ,b ,clck_endsjmp clck1clck_end:jc clock_endclck1:mov day,#01hinc monmov a,moncjne a,#13d ,clock_endmov mon,#01d inc yearmov a,yearcjne a,#100d ,clock_endmov year,#00d clock_end:call fl_outretmou_12: db 31d, 28d, 31d, 30d, 31d,30ddb 31d, 31d

45、, 30d,31d, 30d,31dyear_d:db 29d, 28d, 28d, 28d, 29d, 28d , 28d, 28d, 29d, 28d db 28d, 28d, 29d, 28d, 28d, 28d , 29d, 28d, 28d, 28d db 29d, 28d, 28d, 28d, 29d, 28d , 28d, 28d, 29d, 28d db 28d, 28d, 29d, 28d, 28d, 28d , 29d, 28d, 28d, 28d db li jie 2000.5.15;*t1:push apush pswpush bclr fl_ms_fdjnz t_1

46、s ,t1_endclr fl_s_finc seccall adj_w;*t1_end:pop bpop pswpop aretiadj_w:clr tr1mov a,#T_L_100msadd a, w_adj ;*have 5 ordermov tl1 ,amov a,#T_H_100msaddc a, #00hmov th1,a mov t_1s,#timer_nosetb tr1retfl_out: jb fl_ms_f ,fl_out_endsetb fl_ms_fmov a,t_1smov b,#02ddiv abmov a,bjnz to_d1cpl fl_250msto_d1

47、: mov a,t_1smov b,#04ddiv abmov a,bjnz to_d2cpl fl_500msto_d2: fl_out_end:call sec_outretsec_out:jb fl_s_f ,sec_out_endsetb fl_s_fmov a,secmov b,#07djnb fl_3s,za1 mov b,#02dza1:div abmov a,bjnz sec_out_endcpl fl_3s sec_out_end:ret;*key_del:mov a,key_datajnz kl_12mov a,fristjnz kl_13retkl_13:mov key_

48、data,fristmov frist,#0clr key_over jmp sf_beepkl_12: jnb key_over,kl11mov a,t_30msadd a,#03mov b,#60ddiv abmov a,seccjne a,b,key_del_endclr key_over jmp set_keykl11:mov t_30ms,secsetb key_overkey_del_end:call sf_acjne a,#key_da,sfg_12clr key_over jmp sf_beepsfg_12:mov frist,key_datamov key_data,#0re

49、t;* key_bord:acall re_kmov a,key_datajz key_bord1_end;acall psf_key0key_bord1_end:setb key_fretset_key:mov a,key_datacjne a,#01h,set_cc1setb set_al4_fsjmp sf23set_cc1:cjne a,#02h,sf23setb set_clk_fsf23:ret;*sf_key:call clockcall week_autocall al_outsetb key_fcall ledcall sf_acjne a,#key_da,sf_keycal

50、l sf_beepretsf_beep:clr beep_fcall timer_20mssetb beep_fret ;*re_k: mov key_data,#00hmov p1,#00hmov a,p3orl a,#01111111bmov p3,aclr key_fmov a,p3setb key_fmov p1,#0ffhanl a ,#00000110bcjne a,#00000110b,you_keyre_k_end: retyou_key:call timer_20ms;call ledmov p1,#00hmov a,p3orl a,#01111111bmov p3,aclr key_fmov a,p3setb key_fmov p1,#0ffhanl a ,#key_dacjne a,#key_da,you_key1ret;sjmp re_k_end you_key1:jb acc.1,key_kbmov key_data,#02hkey_kb: jb acc.2,sf_key0mov key_data,#01hsf_key0:ret sf_a:mov p1,#00hmov a,p3orl a,#01111