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prisoha [69]
3 years ago
11

-(-13) P binary using signed. 2's complement representation

Computers and Technology
1 answer:
ArbitrLikvidat [17]3 years ago
3 0

Answer:

00011101

00011101

Explanation:

Given the following arithmetic operations

a)   (+42) + (-13)

b)   (-42) - (-13)

From (a):

We need to convert +42 into binary, so we get = 00101010

Now for +13, when it is converted into binary, we get = 00001101

But, here, the 13 is negative. So, here is what we will do, we will have to take the two compliment of the binary. After doing that, we get = 111110011

∴

+ 42     →     00101010

<u> - 13      →     1 1 1 10011 </u>

<u>+29             000 11101  </u>

Thus, the arithmetic operation after we use 2's complement is 00011101

b)

Here both 42 and 13 are negative. Using two complement representation

-42 is first converted to binary as 00101010, Then → 11010101 + 1 = 11010110

-13 is converted to binary as 00001101 → 11110010 = 11110011

In between, a negative sign exists, so we take another 2's complement.

i.e.

11110011 → 00001100 + 1 = 00001101

- 42 →     1 1 01 0110

<u>+13  →     00001 101</u>

<u>-29         1 1 1 00011</u>

<u />

since there is no carry, we take two's complements for the result as:

1 1 1 00011 →00011100 + 1 = 00011101

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