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In his 1948 essay, "Intelligent Machinery", Turing wrote that his machine consisted of:<blockquote>...an unlimited memory capacity obtained in the form of an infinite tape marked out into squares, on each of which a symbol could be printed. At any moment there is one symbol in the machine; it is called the scanned symbol. The machine can alter the scanned symbol, and its behavior is in part determined by that symbol, but the symbols on the tape elsewhere do not affect the behavior of the machine. However, the tape can be moved back and forth through the machine, this being one of the elementary operations of the machine. Any symbol on the tape may therefore eventually have an innings.

In his 1948 essay, "Intelligent Machinery", Turing wrote that his machine consisted of:<blockquote>...an unlimited memory capacity obtained in the form of an infinite tape marked out into squares, on each of which a symbol could be printed. At any moment there is one symbol in the machine; it is called the scanned symbol. The machine can alter the scanned symbol, and its behavior is in part determined by that symbol, but the symbols on the tape elsewhere do not affect the behavior of the machine. However, the tape can be moved back and forth through the machine, this being one of the elementary operations of the machine. Any symbol on the tape may therefore eventually have an innings.

在1948年的论文《智能机器（Intelligent Machinery）》中，图灵写道他的机器包括:

在1948年的论文《智能机器（Intelligent Machinery）》中，图灵写道他的机器包括:以无限长纸带的形式获得的无限存储容量，纸带上标有方块，每个方块上可以打印一个符号。在任何时候，机器中都有一个符号，被称为扫描符号。机器可以改变扫描的符号，其行为部分由该符号决定，但纸带上其他地方的符号不会影响机器的行为。然而，纸带可以在机器中来回移动，这是机器的基本操作之一。因此，纸带上的任何符号最终都可能有一个局。

 

...以无限长纸带的形式获得的无限存储容量，纸带上标有方块，每个方块上可以打印一个符号。在任何时候，机器中都有一个符号，被称为扫描符号。机器可以改变扫描的符号，其行为部分由该符号决定，但纸带上其他地方的符号不会影响机器的行为。然而，纸带可以在机器中来回移动，这是机器的基本操作之一。因此，纸带上的任何符号最终都可能有一个局。

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