点阵LED显示器组成原理图
620
f图258×8点阵LED引脚的排列图
电路图如下所示：
720
f四、程序必要操作：正确连接点阵到学习板
820
fi
cludeAT89X52H包含头文件u
sig
edcharmode0mode1mode2mode3mode4sbitk1P27sbitk2P26sbitk3P25sbitk4P24sbitk5P20
显示模式
u
sig
edcharxi
180x00x00x00x6C0x920x440x280x10心形1u
sig
edcharbxi
180x00x00x00x6C0x820x00x280x10半心形1u
sig
edcharxi
280x00x360x490x220x140x80x00x0心形2u
sig
edcharbxi
280x00x360x410x00x140x80x00x0半心形2u
sig
edcharxi
80x00x360x410x6E0x960x4C0x280x10
920
f双心形2
u
sig
edcharzimu080x380x240x220x220x220x220x240x38Du
sig
edcharzimu180x3C0x180x180x180x180x180x180x3CIu
sig
edcharzimu280x1E0x200x400x400x4E0x420x220x1EGu
sig
edcharzimu380x3C0x180x180x180x180x180x180x3CIu
sig
edcharzimu480x200x200x200x200x200x200x200x3ELu
sig
edcharzimu580x7E0x400x400x7E0x7E0x400x400x7E
1020
fEu
sig
edcharzimu680x00x420x620x520x4A0x460x420x0Nu
sig
edcharzimu780xFF0x180x180x180x180x180x180x18T
u
sig
edchar
ame080xE90x2A0xEC0x9F0xE80x2C0x6A0x29张u
sig
edchar
ame180x420x240x7E0x00x3C0x00xFF0x0兰u
sig
edchar
ame280x260x740x250xFE0x560x550x560x94郝
u
sig
edcharai080x3C0x180x180x180x180x180x180x3CI
1120
fu
sig
edcharai180x00x660xFF0xFF0x7E0x3C0x180x0实心u
sig
edcharai280x00x660x990x810x420x240x180x0空心u
sig
edcharai380x420x420x420x420x420x420x420x3CU
u
sig
edcharxie080x00x3E0x80x80x80x80x80x0Tu
sig
edcharxie180x00x240x240x240x3C0x240x240x24Hu
sig
edcharxie280x00x80x140x3E0x410x410x00x0Au
sig
edcharxie380x00x00x220x260x2A0x320x220x0
1220
fNu
sig
edcharxie480x220x240x280x300x280x240x220x0Ku
sig
edcharxie580x1C0x220x200x100xC0x20x220x1CS
voiddelay
u
sig
edi
tcc300whilecvoidmai
voidu
sig
edi
tijkmk11k21k31
延时函数主函数
1320
fk41k51m10mode00fork0k8k
forj0j30jfori0i8i
描一列并发送数据码
调节字母变化速度点阵8列动态扫描法显示，每次扫

ifmode00
模式03分别对应4种表情，根
据模式选择表情所对应的显示码
P0zimu0iifmode01
P0zimu1iifmode02
P0zimu2iifmode03
P0zimu3iifmode04
P0zimu4iifmode05
1420
fP0zimu5i
ifmode06
P0zimu6i
ifmode07
P0zimu7i
P11i
扫描该列
delay
延时

mode0
ifmode07
mode00

P00
Pr