earlier, you had computers built with parts for a specific task. you’d have a computer for addition, one for subtraction, one for integration, and so on. these computers didn’t resemble our modern computers, in that a programmer will write code to tell it what to do. they were more like very advanced abacuses, using physical objects to perform calculations.
a turing machine was the first conception of the modern computer- one that doesn’t need to be purpose built for a task, but could be programmed to do anything.
with this definition, you’ll see that many things are turing machines, even minecraft!
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