Question

Perform the following operation in the Signed 2’s complement system. Use eight bits for each number. Check your results by converting the binary result back to decimal. Please show all the steps, also please type steps and answer no picture upload from written work please

Add +68 to -45  

Answer 1

Solution:-

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Convert 68 to binary

  

In Eigth Bit 01000100 here sign og 68 is + so no conversion needed

Convert 45 to binary

in eight bits 00101101 Here sign of 45 is negative so conversion needed

1's complement of 00101101 = 11010010

2's complement = 11010010 + 1 =11010011

Add  01000100 and 11010011

01000100 + 11010011 = 00010111

Decimal value of 00010111

Hence our solution is correct