Various computer architectures have featured machine instructions that allow the specification of three, two, one, or even zero operands. Explain the trade-offs inherent to the choice of the number of...

Various computer architectures have featured machine instructions that allow the specification of three, two, one, or even zero operands. Explain the trade-offs inherent to the choice of the number of operands per machine instruction. Pick a current or historical computer architecture, find out how many operands it typically specifies per instruction, and explain why you think its architects implemented the instructions the way they did.