WebSep 12, 2014 · 1) A gets zero, then. 2) R2 gets 10, then. 3) A gets 25, then. 4) DJNZ decrements the value of R2 making it 9 and since the result is non zero, executes AGAIN … WebORG 0000H ; start of the program at location 0000H MOV A , P0 ; Using port0 to give the input MOV R0 , # 08H ; Counter MOV R1 , # 00H ; Clear R1 initially LOOP : RLC A ; …
在8X51单片机的P口接8个发光二管,在1MT0引断接一清料并、用 …
Web1、 mov r3,#28h ;1 2、 loop: nop ;1 3、 nop ;1 4、 djnz r3,loop ;2 5、 ret ;2 根据晶振为6mhz知每个机器周期为2us,为了说明方便对上面程序段编了个号: 第1条指令只在循环 … WebSince the DJNZ loop test control is at the end of the loop, all the operations for the loop happen on the zeroth time when the loop exits as they do all the previous times. This … the voice kids france streaming
8051 microcontroller problem to find execution time of part1 for a ...
WebAug 7, 2016 · In this instruction 8-bit data value in the register will be moved to the accumulator. The syntax of instruction will be: ( MOV Destination, Source) Hence the instruction to move the contents of register 3 to the accumulator will be: MOV A, R3. So option (1) is the correct answer. WebDec 15, 2013 · Microcontroller Solutions DELAY:MOV R5,#100 1 BACK: MOV R2,#200 1 AGAIN:MOV R3,#250 1 HERE:NOP 1 NOP 1 DJNZ R3,HERE 2 DJNZ R3,AGAIN 2 … WebBACK: DJNZ R3,BACK ;keep the buzzer on for a while. CLR P1.3 ;turn off the buzzer RETI ;return from ISR; – – – – – – MAIN program for initialization. ORG 30H. MAIN: SETB TCON.2^{\nearrow ^{\text{When the falling edge of the signal is ... the voice kids from ukraine