组成原理课试验，实现1.加法运算2.减法运算3原码一位乘4补码一位乘5.原码加减交替除法6.补码加减交替除法-Composition Principle lesson tests, to achieve 1. Adder computing 2. Subtraction computing the original code, a 3 by 4 by 5, a complement. The original code division 6 alternating addition and su