This is a bad example if you consider that microwaves and toasters are to food as computers are to code. These kitchen appliances aren't marked as running code

This is a bad example if you consider that microwaves and toasters are to food as computers are to code. These kitchen appliances aren't marked as running code at all, but they do accept food as input and produce cooked food as output just as computers accept program code as input and produce running software. That I can put many different types of food and breads into my microwaves and toasters (I am only limited by the capacity of the hardware) means that these appliances are actually much more like general purpose computers than they are like a locked-down iPad. One kitchen appliance that I think we can aptly relate to an iPad is the line of Keurig coffee machines that will only work with Keurig brand K-cups.