We want to use 2s complements to compute the 4-bit result of the sum 7 + (5).

a) What is 7 in 4-bit 2s complement form? What is 5 in 4-bit 2s

complement form?

b) Sum the results of (a) to form the 4-bit result (ignore overflow).

c) What is the result of (b) in decimal form?