Djnz r7 loop
Webdjnz r0,loop ;没有移动够7 ... djnz r7,loop. ajmp start. delay:mov r5,#200. del: mov r4,#250. djnz r4,$ djnz r5,del. ret ;t=(250*2+3)咐简*200+3=100603us 假设用12m ... WebDept. of ECE, B.I.T., Mangalore 8 2012-13 10ESL47 Microcontrollers Lab 8. Write an assembly language program to find the square of a given number N. Let N = 05 mov …
Djnz r7 loop
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WebAug 26, 2011 · 单片机汇编实现延迟的程序代码:delay: mov r7,#250 ;d1: mov r6,#250 ;d2: djnz r6,d2 ;djnz r7,d1 ;ret如果用语言编程,只需要简单地调用延时函数就可以实现,但是计算机具体是怎么实现的呢? 要想知其所以然,还得从汇编开始学起。冒号前面的“delay”、“d1”、“d2”为语句行的名字,是为了 ... WebD2: DJNZ R6,D2 ;D2也是标号,DJNZ相当于c语言中的if else,让我仔细说一下他的作用,减一不为零转移指令(dec 1 jump if not zero),就是把r6中的内容减去一,然后判断它 …
Webl036: mov r7,#0ffh //或更改#0ffh值就可以改变其每次调用延时的时间. l035: djnz r7,l035. djnz r6,l036. ret. end. 上一节我们介绍了什么是总线的方法,以及如何通过十六进制来控制io口。并把我们的之前单点操作的流水灯进行了改进,成为了一个新的更加简洁的程序。 Web单片机课后习题答案3.pdf,《单片机原理及应用》习题参考答案 第一章 1. 为什么计算机要采用二进制 ?学习十六进制 的 目的是什么? 在计算机中,由于所采用的电子逻辑器件仅能存储和识别两种状态的特点,计算机 内部一切信息存储、处理和传送均采用二进制 的形式。
Web李广弟版单片机基础答案第一章:一填空题111100EH1001110001100100243. 255 51 4. 输入设备5. 84 6. 630 8 1024 7. 位字节字 bit byte word 8. 1111 1111 001
WebMOV R7,#250D LABEL1: DJNZ R6,LABEL1 LABEL2: DJNZ R7,LABEL2 RET The above program roughly produces a delay of 1mS. The instruction DJNZ R,LABELx is a two …
WebQuestion: Modify the below subroutine to perform the following: Counts up from 0 to 21. After reaching 21, the next value should be 0 followed by 1, 2,4,8,16,32,64,128 and then … medium weight thermal underwearWebOct 27, 2011 · #include org 8100h start: mov r7,#1000 loop: mov tmod,#20h mov th1,#06h setb tr1 lap: jnb tf1,lap clr tf1 djnz r7,loop cpl p1.0 sjmp start end và còn cái yều … nails white and silverWebTimes New Roman Comic Sans MS Wingdings Symbol Bookman Old Style Courier New PMingLiU Arial Arial Unicode MS Default Design Microsoft Photo Editor 3.0 Photo 8051 Programming (Addressing Mode-Instruction Set) Lec note 5 Outline Data Transfer Instructions Addressing Modes Addressing Modes Addressing Modes Addressing Modes … medium weight sweatshirts for menWebAug 29, 2015 · DJNZ R7,LOOP ; Đếm lùi r7 để làm trễ. RET ; Cho quay lại thực hiện dòng lệnh sau lệnh call. END ; Dừng biên dịch . Phân tích cách viết các câu lệnh: Trong bài … nails whitefishWebloop: movx a, @dptr mov @r0, a mov a, #00h movx @dptr, a inc r0 inc dptr djnz r7, loop ret 9.设有100个有符号数,连续存放在2000h为首地址的存储区,试编写统计 正数、负数和零的个数。 org 2000h mov dptr, #2000h mov r2,a mov a,31h addc a,33h da a mov r3,a clr a mov acc.0,c mov r4, a here: sjmp here ... medium weight white plastic teaspoonWebMay 21, 2015 · How to Delay ? • Create loop (Each loop take time to complete) • Create Nested loop to make more delay • Use DJNZ as a tools for loop • Write the code as Sub … medium weight velveteen for pillowshttp://www.yidianwenhua.cn/hangye/153139.html medium weight winter coat