Automation: A PIN code typically consists of four digits, and is used to identify a person...

 

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Automation: A PIN code typically consists of four digits, and is used to identify a person or a group of people. For example. for example, the front door of a high-rise building can be opened by entering a certain PIN code on a numeric keypad. The door must be opened when a certain sequence of numbers is entered, regardless of what is entered before or after the code. Construct a PIN reader that accepts the code 4457. The door can be opened by setting an output signal y = 1. a. Construct a state graph and a state table for the PIN reader. b. Construct the Boolean expressions that describe the PIN reader. Note that in the first task you already preprocessed the information from the keyboard so that you only have four logical input signals that you need to handle, 4, 5, 7 and X. X = 1 thus means that one of the guaranteed incorrect numbers has been entered. Automation: A PIN code typically consists of four digits, and is used to identify a person or a group of people. For example. for example, the front door of a high-rise building can be opened by entering a certain PIN code on a numeric keypad. The door must be opened when a certain sequence of numbers is entered, regardless of what is entered before or after the code. Construct a PIN reader that accepts the code 4457. The door can be opened by setting an output signal y = 1. a. Construct a state graph and a state table for the PIN reader. b. Construct the Boolean expressions that describe the PIN reader. Note that in the first task you already preprocessed the information from the keyboard so that you only have four logical input signals that you need to handle, 4, 5, 7 and X. X = 1 thus means that one of the guaranteed incorrect numbers has been entered.