微机原理期末考试复习课案(共10页).doc

精选优质文档-倾情为你奉上1、统计出某数组中相邻两数之间符号变化的次数DATA SEGMENT ARRAY DB 20 DUP (?) NUM DB 0DATA ENDSCODE SEGMENT ASSUME CS:CODE,DS:DATASTARTUP:LEA SI , ARRAY; MOV AL ,SI MOV BL,0 MOV CX,19 AGAIN: INC SI XOR AL ,SI J NS NEXT INC BL NEXT: MOV AL ,SI LOOP AGAIN MOV NUM,BL MOV AH ,4CH INT 21HCODE ENDS END STARTUP2、乘法指令实现32位二进制数与16位二进制数相乘MODEL SMALL .8086 .DATA N1 DW 1234H N2 DW 5678H N3 DW 4444H M1 DW 0 M2