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CODES EXPLORER
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8051
8051 Assembly Code To Find LCM Of Two Numbers
July 28, 2017 codesexplorer0 Comments
Hello guys! After lot of optimization and debugging finally found a ALP program to find LCM of two numbers using 8051 micro-controller. Happy share this piece of code with you guys.
Its easy and short. We have been learning to find LCM from our school days. Finding Least common multiple of of two numbers is easy by finding GCD of those two numbers and then dividing of product of those two number by GCD. But in terms of programming its complicated! So, here I have new algorithm to find LCM of two numbers.
ALGORITHM:
Start
Store first number(num1) in a register
Store second number(num2) in another register
Initialize a counter register(Rd) to 01h
Compare both the values num1 and num2
If num1 = num2 : Store num1 or num2 as result and jump to step 8
If num1 < num2 : Swap the register values so that num1 > num2
Multiply num2 and Rd and divide the product with num1
Check the reminder
If reminder is zero then store product obtained from multiplication in step 6 as result and jump to step 8
Else increment Rd and repeat steps 6 and 7
Stop
Here is example code to find LCM of 3 and 6
CODE:
<br />ORG 0000h<br /> LJMP main<br /> ORG 0040h<br /> main: MOV R0,#03h ; Initializing first number<br /> MOV R1,#06h ; Initializing second number<br /> MOV R2,#01h ; Initializing counter register(Rd)<br /> MOV A,R0<br /> MOV B,R1<br /> CJNE A,B,lab
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