Today I want to tell everyone about that I made a coin machine, it can know how much is the coin, if you put a five-dollar coin on the machine, it will say five.
You can only put NTD, because if you put another country's coin, it will be wrong, so you can only put NTD coins.
The machine has four boxes beside, so it can put different coins in different boxes, so you can take them easily.
I think this machine is a very good machine, because you just have to put the coin on the machine, and it will help you to put them in the right box.
I think the thing I can improve is that the machine can know if you are putting a coin or not, and I can also use my voice, too.
