In the context of Turing machines, the tape is an infinite strip of cells used for storing data, serving as the primary memory of the machine. Each cell on the tape can hold a symbol from a finite alphabet, and the tape moves left or right under the control of the machine's read/write head. The capability to manipulate symbols on the tape is essential for the computational power of Turing machines and illustrates how these machines can perform any computation that can be algorithmically defined.
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