Final answer:
Three sets of 8-bit binary numbers are added together, and their sums are interpreted as both signed and unsigned values.
Step-by-step explanation:
Perform addition for each set of 8-bit binary numbers. Then interpret the sums as signed (2's complement) and unsigned numbers.
Set 1:
Number 1: 01111001 (unsigned: 121, signed: 121)
Number 2: 00011110 (unsigned: 30, signed: 30)
Sum: 10000111 (unsigned: 135, signed: -121)
Set 2:
Number 1: 00011011 (unsigned: 27, signed: 27)
Number 2: 00010100 (unsigned: 20, signed: 20)
Sum: 00101111 (unsigned: 47, signed: 47)
Set 3:
Number 1: 11110110 (unsigned: 246, signed: -10)
Number 2: 10000011 (unsigned: 131, signed: -125)
Sum: 01111001 (unsigned: 121, signed: 121)
For calculating the signed decimal value, we consider the leftmost bit as the sign bit. If it's 1, the number is negative, and we calculate the 2's complement to find the magnitude. For unsigned decimal values, we simply convert the binary number to decimal.