51微控制器中unsigned char到底定义的是字元还是0--255的数字答:MOV 5EH,#79H MOV 5FH,#71H MOV 60H,#40H MOV 61H,#00H 八位管的暂存 从左到右40-47 MOV 40H,#50H MOV 41H,#50H MOV 42H,#60H MOV 43H,#50H MOV 44H,#50H MOV 45H,#60H MOV 46H,#50H MOV 47H,#50H MOV 48H,#00H 扫描位暂存 MOV R0,#40H 扫描值地址 MOV 4AH,00H ...