Circuit design issues

Circuit design issues

􀂃We had to find a suitable data representation for the inputs andoutputs.

—The inputs were just two-bit binary numbers.

—We used three outputs, one for each possibility of the numbers being greater than, equal to, or less than each other. This is called a “one out of three” code.

􀂃K-maps have advantages but also limitations.

—Our circuits are relatively simple two-level implementations.

—But E(A1,A0,B1,B0) couldn’t be simplified at all via K-maps. Could we do better using Boolean algebra?

􀂃Our circuit isn’t very extensible.

—We used a brute-force approach, listing all inputsand outputs. This makes it hard to extend our circuit to compare largernumbers.

—We’ll have a better solution after we talk about computer arithmetic.

􀂃There are always many possible ways to design a circuit!