Hello Guys today we are going to see

problem number one on toys complement subtraction so far we have seen how do

you find two’s complement and two’s complement subtraction steps so here we

will apply these steps that is set number finder set number four to obtain

the correct answer of the given problem so let’s perform the subtraction using

two’s complement method so here we have to perform 12 minus 9 using the two’s

complement metal so first of all to verify the answer correct let’s perform

this subtraction in the normal decimal number 12 minus 9 will give us 3 in the

decimal now let’s perform two two’s complement subtraction to get the

correct answer as 3 so the first step is to find out the binary of pail

why do we find out the binary of 12 first step is always to find out the

binary of the first number okay so here are the first number is 12 so let us

find out the binary of the first number the binary of the first number will give

us 1 1 0 0 that is 1 2 4 8 8 plus 4 will give us 12 therefore this is the correct

answer for the binary of 12 now the second step the second step is

to find out two’s complement of 9 funny how we find out two’s complement of 9 to

find out two’s complement of 9 first of all we

have to convert this to nine decimal number into the binary so let’s convert

this night into the binary it is 1 0 0 1 this is binary of 9 not now the second step is to find out

the ones complement of night to find out the best complement of night we will

replace this each to date by its opposite value so one will be replaced

by 0 0 will be replaced by one so you know will be replaced by one and one may

be replaced by 0 so what is this this is still one’s complement of 9 fine now the

next step is to find out two’s complement to find out the two’s

complement we have to add but in the ones complement so let’s add in the ones

complement of nine so once complement of 9 is 0 1 1 0 will add 1 into this okay

so this remaining reduce will be 0 so 1 plus 0 will give us 1 but plus 0 will

give us 1 when proceed ok give us 1 & 0 plus 0 is 0 so this is the truest

complement of 9 now the step number 3 step number 3 is very important because

strong said number 3 we will be able to know whether our answer is positive or

negative here we have got our answer as positive so from the two’s complement

subtraction also we should get answer as positive 3 so there is add step number 1

and step number 3 so in step number one we have the binary of fellows 1 1 & 0 0

and in step number 2 two’s complement of 9 is 0 1 1 0 1 1 1 so let’s add the step

1 and step 2 so 0 + 1 0 plus 1 will give us 1 0 plus 1 again will give us 1 and

we are watch carefully well plus 1 is 0 and the carry will be

fine so 1 plus 1 is 0 and Kali is 1 now I’m here 1 plus 0 is 5

1 plus 0 is 1 and ya carry husband so again we will perform 1 plus 1 so 1 plus

1 will give us 0 and carry will be 1 now here no one other number is present so

therefore we have got the carry as well if you have doubt in this subtraction so

let us perform this subtraction separating it is 1 plus 0 is 1 and again

we have the carry this one so 1 plus 1 is 0 and this one is scary ok so this is

how we have on this subtraction over here now the state number food is very

important in previous steps we have seen that if the carry is present we just

have to delete the cat into its complement don’t confuse with words

compliment method and two’s complement mentioned in swoons complement method if

we have got the carry we used to do the end around carry but here if we have

find out the guy is present we can simply delete the carry

or we can simply not the cat so you don’t have to worry about the answer

that you have to make the end run carry your people simply delete this guy this

carry will be deleted and this is your final answer now to verify whether the

answer is right or wrong we will convert this final number into a decimal so when

it is your 1 let’s write down the binary package and sell out 0 but H value and

this will give us 3 in decimal now how you will be able to know whether the

answer is positive or negative see you if the carry is present that is carry

one is present then answer is always positive therefore the answer is

positive so this is how we have performed the subtraction using two’s

complement matter so in this method the very important step is step number 4 if

the carry is present you have to delete the carry so this is a very easy method

and if you have performed in each and every step correctly you will get the

final answer as a correct reason so don’t forget to perform each step but it

kills me and if you make any say then your answer will get wrong

therefore perform the binary addition very carefully and also perform the

binary conversions very carefully to get the final correct answer