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1、标题：基于单片机的 24 X 24点阵LED汉字显示作者： AA硬件： 51 系列单片机， 74HC138,74HC595,24*24 点阵屏，按键SH_CPbit P0.0；移位寄存器时钟输入ST_CPbit P0.1；存储寄存器时钟输入DDSbit P0.2；串行数据输入MRbit P0.3；主复位 （ 低电平 ）OEbit P0.4；使能*74HC595管脚定义 * 74HC138* *E1bit P1.3/18列控制使能E2bit P1.4/916列控制使能E3bit P1.5/1724列控制使能/*按键 */KEY1bit P2.0/ 控制移动和停止KEY2bit P2.1/控制显示
2、的开和关KEY3bit P2.2/移动速度加 / 减ORG 0000HPANT: MOVMOVGG:AJMPMAINORG0030HMAIN: MOV55H,#06MOVSP,#64HMAIN3: MOVDPTR,#TABCLRMRCLRST_CP入NOPSETB ST_CPSETB MRCLR OEMOVR4,#216MAIN1: CLRE1CLRE2CLRE3MOV R5,55HMAIN2: JBKEY2,S_STOPJNBKEY2,$CPL0EHS_STOP: JB0EH,MAIN1JBKEY1,JIANJNBKEY1,$CPL0FHJIAN: JBKEY3,Q_OUTJNBKEY3,$
3、DEC55HMOVR5,55HCJNE R5,#0,Q_OUTMOV 55H,#06Q_OUT: MOVR2,#0MOV R1,#054H,#0353H,#08MOV 50H,#08；主复位 （ 低电平 ） ；存储寄存器时钟输；显示 9 字，每字左移 24 列，共 216 列；反复显示 可改变移动速度；等待按键释放；显示开 / 关控制标志位；移动控制的标志位；取码指针；列控制码FF: MOV A,R1ANLMOVINCACALL GCA,#07HP1,A；屏蔽 R1 高 5 位M_STOP:GC:AAA:MOVAA:MS:DELAY: MOVDJNZMOVA,53H；控制74LS138ORLP
4、1,A；74LS138 使能ACALLMSDJNZ50H,FF；8 列未扫描完返回MOVA,53HRLAMOV53H,ADJNZ54H,GG； 24 列为扫完返回DJNZR5,MAIN2；反复 6 次未完，继续显示JB0FH,M_STOPINCDPTRINCDPTRINCDPTR；改变 TAB 地址实现文字移动现象DJNZR4,MAIN1AJMPMAIN3MAIN1MRSETBOE；管脚呈现高阻态MOV51H,#03；传送三位字节A,R2MOVCA,A+DPTR；取当前列第 1 个字节R3,#8 ；位传送到 74HC595RLCAMOVDDS,CCLRSH_CPNOPSETBSH_CPDJNZ
5、R3,AA ；8 位未传送完，继续CLRST_CPNOPSETBST_CPINCR2；取码指针加 1DJNZ51H,AAACLROE；把数据传送到管脚RETMOVR6,#5；ms 延时子程序R7,#190DJNZR7,$R6,DELAYRETR1MOV不能按 Enter进行换行，否则会报错 )片选AJMPSETBTAB: ( 在实际程序中，DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H, 00H,00H,00H,00H,00H,00H,00H,00H;DB 00H,00H,00H,00H,00H,00H,00
6、H,00H,00H,00H,00H,00H;" ",0DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H, 00H,00H,00H,00H,00H,00H,00H,00H;DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H;" ",0DB 00H,00H,00H,80H,03H,1CH,0C0H,03H,1EH,60H,03H,1BH,20H,80H,19H, 20H,0C0H,18H,20H,60H,18H,60H,38H
7、,18H;DB 0E0H,3FH,18H,0C0H,1FH,1FH,80H,07H,1FH,00H,00H,00H;"2",1DB 00H,00H,00H,00H,0C0H,00H,00H,0F0H,00H,00H,0B8H,00H,00H,8EH,00H,00H,87H,10H,0C0H,81H,10H,0E0H,0FFH,1FH;DB 0F0H,0FFH,1FH,0F0H,0FFH,1FH,00H,80H,10H,00H,80H,10H;"4",1DB 00H,00H,00H,00H,42H,00H,00H,66H,00H,00H,66H,00H,0
8、0H,7EH,00H,00H,3CH,00H,0C0H,0FFH,03H,0C0H,0FFH,03H;DB 00H,3CH,00H,00H,7EH,00H,00H,66H,00H,00H,66H,00H;"*",2DB 00H,00H,00H,80H,03H,1CH,0C0H,03H,1EH,60H,03H,1BH,20H,80H,19H, 20H,0C0H,18H,20H,60H,18H,60H,38H,18H;DB 0E0H,3FH,18H,0C0H,1FH,1FH,80H,07H,1FH,00H,00H,00H;"2",2DB 00H,00H,00
9、H,00H,0C0H,00H,00H,0F0H,00H,00H,0B8H,00H,00H,8EH,00H,00H,87H,10H,0C0H,81H,10H,0E0H,0FFH,1FH;DB 0F0H,0FFH,1FH,0F0H,0FFH,1FH,00H,80H,10H,00H,80H,10H;"4",3DB 00H,00H,00H,00H,00H,00H,00H,00H,40H,00H,00H,60H,00H,00H,78H, 00H,00H,38H,00H,0FEH,01H,00H,0FEH,01H;DB 00H,84H,04H,00H,84H,1CH,00H,84H,3
10、8H,0FCH,87H,30H,0FCH,87H,00H, 24H,84H,04H,20H,84H,1CH,20H,84H,38H;DB 20H,84H,30H,20H,0FEH,01H,20H,0FEH,05H,30H,0FEH,0DH,30H,00H, 38H,20H,00H,38H,00H,00H,20H,00H,00H,00H;"点 ",4DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,0F8H,0FFH,7FH,0F8H,0FFH, 7FH,08H,02H,01H,88H,07H,03H,0F8H,8DH,03H;DB 78H,0F8
11、H,01H,38H,0F0H,03H,20H,10H,02H,20H,1EH,02H,0E0H,1FH, 02H,0F8H,13H,02H,7CH,10H,02H,2CH,0FFH,7FH;DB 24H,0FFH,7FH,20H,11H,7EH,20H,10H,02H,20H,10H,02H,30H,18H,03H,30H,08H,01H,20H,00H,01H,00H,00H,00H;"阵 ",5DB 00H,00H,00H,00H,02H,00H,00H,02H,00H,00H,02H,00H,04H,02H,00H, 3CH,0FEH,1FH,38H,0FEH,1FH
12、,30H,0EH,5CH;DB 00H,0CH,46H,00H,06H,43H,00H,0FH,61H,0FCH,1BH,20H,0FCH,79H,30H, 18H,0E8H,19H,08H,88H,0FH,08H,08H,0EH;DB 08H,88H,0FH,0FCH,0E9H,1BH,0FCH,0F9H,30H,00H,39H,30H,00H,09H, 70H,00H,01H,60H,00H,01H,20H,00H,00H,20H;" 设 ",6DB 00H,00H,00H,00H,04H,00H,00H,04H,00H,00H,04H,00H,04H,04H,00H,
13、 1CH,0FCH,3FH,38H,0FCH,3FH,38H,04H,1CH;DB 30H,00H,0EH,00H,04H,07H,00H,84H,01H,00H,84H,00H,00H,04H,00H, 00H,04H,00H,0FCH,0FFH,7FH,0FCH,0FFH,7FH;DB 0FCH,0FFH,7FH,00H,04H,00H,00H,04H,00H,00H,04H,00H,00H,06H,00H,00H,02H,00H,00H,02H,00H,00H,00H,00H;"计 ",7DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H, 00H,00H,00H,00H,00H,00H,00H,00H,00H;DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H;" ",8DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H, 00H,00H,00H,00H,00H,00H,00H,00H,00H;DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H;" ",8END