进入后输入第一个数和第二个数然后可以看到上方的箱子里显示了他们的和，积，方，等等 Enter the first number and the second number after entering, then you can see their sum, product, square, etc. are displayed in the box above.
我的第一版计算器太慢了，输入还要符号。这回直接给他一起放上去。解决了所有问题。就是奥叔说的一句话：无论遇到什么困难都不用怕。 My first calculator was too slow, and the input required symbols. This time put him directly together. Solved all problems
