Web修改:原来有“p=name [i]其实和p = name + i没有任何区别”一句,是不对的,name [i]是数组,其中name可以作为只读指针来看待,那么应该是*p = * (name + i)。. name [i]相当于对指针. 这问题提的真好,理解这个问题了以后,对C语言指针的概念也就掌握了,而C语言最重要 ... WebJul 5, 2024 · inc r0 CJNE R0,#51H,NEXT 5.在片外RAM中有一个数据块,存有若干字符、数字,首地址为SOURCE要求将该数据块传送到片内RAM以DIST开始的区域,直到遇到字符“$”时结束($也要传送,它的ASCII码为24H)。
单片机中psw的作用是什么?_标志_运算_进行 - 搜狐
WebI authorize the release of any information to Blue Cross and Blue Shield of Massachusetts, Inc., about my weight loss program. I certify that the information provided in support of … Web3-1 已知a=7ah,r0=30h(30h=a5h),psw=80h,sp=65h,试分析下面每条指令的执行结果及对标志位的影响。 ... mov a,30h mov r2,a mov a,31h mov r3,a acall binbcd2 mov r0,#40h mov a,r4 mov @r0,a inc r0 mov a,r5 mov @r0,a inc r0 mov a,r6 mov @r0,a binbcd2:clr a mov r4,a mov r5,a mov r6,a mov r7,#16 ... how are stickers put on fruit
MCS-51单片机的程序状态寄存器PSW的作用是什么? - 21ic
http://course.sdu.edu.cn/Download2/20240329111613819.ppt WebThe registers can be any of R0–R7. The counter can also be a RAM location. Example. ... (or PSW) register is used to make the decision whether to jump or not "JNC label". The CPU looks at the carry flag to see if it is raised (CY = 1). If it is not raised, then the CPU starts to fetch and execute instructions from the address of the label. If ... WebApr 23, 2024 · 29、是非题:单片机89C51复位后,其PC指针初始化为0000H,使单片机从该地址单元开始执行程序。. T. 31、是非题:单片机系统上电后,其内部RAM的值是不确定的。. T. 36、以下哪一条指令的写法是错误的 (C)。. A、MOV DPTR,#3F98H B、MOV R0,#0FEH C、MOV 50H,#0FC3DH D、INC R0. 37 ... how are steroids ingested