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1. Design UML design diagrams of your Turing Machine.

1. Design UML design diagrams of your Turing Machine.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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UML Design for Turing Machine Description: An electro-mechanical device used by the British cryptologists to help decipher German Enigma-machine-encrypted secret messages during World War II. A Turing Machine is a very simple abstract model of computation. The machine has an infinite tape that is divided into cells (or squares). Each cell contains a symbol (or character) chosen from some small set of possible symbols. Most of the cells are blank, that is, they contain the blank symbol. The number of non-blank cells is finite. The machine is located on one of the cells, and it can only "see" the symbol in the cell where it is located. It can write a new value to that cell. It can move left or right on the tape, one cell at a time. The machine is in one of a fixed, finite number of possible states. One of the states is the halt state. A Turing Machine has a table of rules. The table of rules is the program for the machine. A rule tells the machine what action to take when it is in a given old state and the cell where it is located contains a given old symbol. The action specifies the new symbol to be placed in the cell (possibly the same as the old symbol), the new state that the machine should change to (possibly the same as the old state), and the direction in which it should move. The direction can be "L" to tell the machine to move left, "R" to tell the machine to move right, or "S" to tell the machine to stay in the same place. There are no rules for what the machine should do when it is in the halt state, since when it is in the halt state, it is done computing. Lab Tasks 1. Design UML design diagrams of your Turing Machine.
Transcribed Image Text:UML Design for Turing Machine Description: An electro-mechanical device used by the British cryptologists to help decipher German Enigma-machine-encrypted secret messages during World War II. A Turing Machine is a very simple abstract model of computation. The machine has an infinite tape that is divided into cells (or squares). Each cell contains a symbol (or character) chosen from some small set of possible symbols. Most of the cells are blank, that is, they contain the blank symbol. The number of non-blank cells is finite. The machine is located on one of the cells, and it can only "see" the symbol in the cell where it is located. It can write a new value to that cell. It can move left or right on the tape, one cell at a time. The machine is in one of a fixed, finite number of possible states. One of the states is the halt state. A Turing Machine has a table of rules. The table of rules is the program for the machine. A rule tells the machine what action to take when it is in a given old state and the cell where it is located contains a given old symbol. The action specifies the new symbol to be placed in the cell (possibly the same as the old symbol), the new state that the machine should change to (possibly the same as the old state), and the direction in which it should move. The direction can be "L" to tell the machine to move left, "R" to tell the machine to move right, or "S" to tell the machine to stay in the same place. There are no rules for what the machine should do when it is in the halt state, since when it is in the halt state, it is done computing. Lab Tasks 1. Design UML design diagrams of your Turing Machine.
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