【導讀】作所取得的成果。盡我所知，另文中已經(jīng)注明引用的內容外，論文由。為本文的研究做出了重要貢獻的個人和集體，均已在。文中以明確的方式標明。本聲明的法律結果由本人承擔。

　　

【正文】 11QG12QH13V CC14U274LS164A1B2QA3QB4QC5QD6GND7CL K8CL R9QE10QF11QG12QH13V CC14U374LS164A1B2QA3QB4QC5QD6GND7CL K8CL R9QE10QF11QG12QH13V CC14U474LS164A1B2QA3QB4QC5QD6GND7CL K8CL R9QE10QF11QG12QH13V CC14U574LS164+5VGNDD7I N 4 0 0 7D6I N 4 0 0 7D5I N 4 0 0 7+5Vc1d2g10e4dp5b6a7f98LED5A1B2QA3QB4QC5QD6GND7CL K8CL R9QE10QF11QG12QH13V CC14U674LS164c1d2g10e4dp5b6a7f98LED6A1B2QA3QB4QC5QD6GND7CL K8CL R9QE10QF11QG12QH13V CC14U774LS164c1d2g10e4dp5b6a7f98LED7A1B2QA3QB4QC5QD6GND7CL K8CL R9QE10QF11QG12QH13V CC14U874LS164+5Vc1d2g10e4dp5b6a7f98LED7A1B2QA3QB4QC5QD6GND7CL K8CL R9QE10QF11QG12QH13V CC14U874LS16412345678J1CON812345678J2CON8R1510KR1610KV cc20Iout111lsbDI07Iout212DI16DI25Rfb9DI34DI416Vref8DI515DI614msbDI713ILE19WR218CS1WR12Xfer17U3DAC0830IN026msb21212220IN12723192418IN2282582615IN312714lsb2817IN42EOC7IN53ADDA25IN64ADDB24ADDC23IN75ALE22ref()16ENABLE9START6ref(+)12CLOCK10U2ADC08093 218 4U4AALM3245 67U4ABLM3243 218 4U4AALM3245 67U4ABLM32432184U4AALM324567U4ABLM32432184U4AALM324567U4ABLM324RP110KRP210K+15V+5V+5VR1810KR1910KR1710KR2010KR2110KR2210KR2310KR2410KV1TIP41CV2TIP41CR292+15VRLR2810KR2710KR2510KR2610K+5VCLK3D2SD4CD1Q5Q6U?A74ALS74CLK3D2SD4CD1Q5Q6U?A74ALS74TO ADC0809.ALE123J3CON31 2 3J3CON312345678J1CON81 2 3 4 5 6 7 8J2CON8 附錄二：源程序 ORG 0000H LJMP MAIN ORG 000BH 江西師范大學科學技術學院 14 屆畢業(yè)設計說明 書 第 17 頁 共 36頁 LJMP SERVE ORG 0030H MAIN:MOV TMOD,01H MOV TL0,0B0H MOV TH0,3CH SETB ET0 SETB EA SETB CLR SETB MOV P0,0FFH MOV P2,199 MOV 30H,00H MOV 31H,00H MOV 32H,00H MOV 33H,00H MOV 34H,00H MOV 35H,00H MOV 36H,00H MOV 37H,00H MOV 40H,00H MOV 44H,00H MOV 45H,00H MOV R0,35H MOV R5,199 LCALL XS AD:LCALL AJ MOV P0,0FFH SETB SETB CLR NOP NOP NOP CLR AD1:MOV C, JC AD1 AD2:MOV C, JNC AD2 SETB MOV A,P0 MOV 40H,A 江西師范大學科學技術學院 14 屆畢業(yè)設計說明 書 第 18 頁 共 36頁 SETB TR0 BJ:MOV A,40H CJNE A,44H,BJ1 LJMP AD BJ1:JC BJ3 MOV A,45H CJNE A,00H,BJ2 LJMP AD BJ2:DEC 45H MOV A,45H MOV P2,A LJMP AD BJ3:MOV A,45H CJNE A,FFH,BJ4 LJMP AD BJ4:INC 45H MOV A,45H MOV P2,A LJMP AD AJ:CLR TR0 SETB MOV C, JC FH LCALL MS MOV C, JC FH AJ1:MOV C, JNC AJ1 LCALL MS LCALL DD FH:RET DD:MOV P1,0FFH MOV A,P1 CPL A ANL A,7CH JZ DD LCALL MS MOV A,P1 CPL A ANL A,7CH JZ DD MOV B,A DD1:MOV A,P1 CPL A 江西師范大學科學技術學院 14 屆畢業(yè)設計說明 書 第 19 頁 共 36頁 ANL A,7CH JNZ DD1 LCALL MS MOV A,B JB ,QD JB ,PKEY1 JB ,PKEY2 JB ,PKEY3 JB ,PKEY4 QD:MOV A,37H MOV B,100 MUL AB MOV 44H,A MOV A,36H MOV B,10 MUL AB ADD A,44H ADD A,35H MOV 44H,A MOV A,R5 CLR C SUBB A,44H MOV 45H,A MOV P2,A RET PKEY1:LCALL ZY LJMP DD PKEY2:LCALL YY LJMP DD PKEY3:LCALL JX LJMP DD PKEY4:LCALL ZJ ZY:CJNE R0,37H,ZY1 MOV R0,35H ZYF:LCALL XS RET ZY1:INC R0 SJMP ZYF YY:CJNE R0,35H,YY1 MOV R0,37H YYF:LCALL XS RET YY1:DEC R0 SJMP YYF 江西師范大學科學技術學院 14 屆畢業(yè)設計說明 書 第 20 頁 共 36頁 ZJ:CJNE R0,35H,ZJ1 CJNE @R0,09H,ZJ2 MOV @R0,00H ZJF:LCALL XS RET ZJ1:CJNE R0,36H,ZJ3 CJNE @R0,09H,ZJ2 MOV @R0,00H SJMP ZJF ZJ2:INC @R0 SJMP ZJF ZJ3:CJNE @R0,01H,ZJ2 MOV @R0,00H SJMP ZJF JX:CJNE R0,35H,JX1 CJNE @R0,00H,JX2 MOV @R0,09H JXF:LCALL XS RET JX1:CJNE R0,36H,JX3 CJNE @R0,00H,JX2 MOV @R0,09H SJMP JXF JX2:DEC @R0 SJMP JXF JX3:CJNE @R0,00H,JX2 MOV @R0,01H SJMP JXF XS:MOV 30H,00H MOV 34H,00H MOV A,40H MOV B,100 DIV AB MOV 33H,A MOV A,B MOV B,10 DIV AB MOV 32H,A MOV 31H,B XS1:MOV R1,30H MOV R2,08H MOV DPTR,TAB XS2:MOV A,@R1 MOVC A,@A+DPTR 江西師范大學科學技術學院 14 屆畢業(yè)設計說明 書 第 21 頁 共 36頁 MOV SBUF,A JNB TI,$ CLR TI INC R1 DJNZ R2,XS2 RET TAB:DB 11H,0D7H,32H,92H,0D4H,98H,18H,0D3H,10H,90H SERVE:DJNZ R4,SERVE1 MOV R4,