A person may open a particular door if he or she has a card containing the corresponding code and enters an authorized keypad code for that card. The outputs from the card reader are as follows: AB 0 0 Valid code for door 1 0 1 Valid code for door 2 1 1 10 No card inserted Invalid card code To unlock a door, a person must hold down the proper keys on the keypad and, then, insert the card in the reader. The authorized keypad codes for door 1 are 101 and 110, and the authorized keypad codes for door 2 are 101 and 011. If the card has an invalid code or if the wrong keypad code is entered, the alarm will ring when the card is inserted. If the correct keypad code is entered, the corresponding door will be unlocked when the card is inserted. Design the logic circuit for this simple security system. Your circuit's inputs will consist of a card code AB, and a keypad code CDE.The circuit will have three outputs XYZ (if X or Y = 1, door 1 or 2 will be opened; if Z = 1, the alarm will sound).

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Using any design approach, plan and design the following problem:
(show the Block Diagram, Truth Table, Simplification Approach Solution, Circuit Diagram)
2. Simple Security System
A simple security system for two doors consists of a card reader and a keypad.
Cand Reader
To Door
To Dor 2
To Alam
Logic
Circuit
D
E
Keypad
A person may open a particular door if he or she has a card containing the corresponding
code and enters an authorized keypad code for that card. The outputs from the card reader
are as follows:
A B
No card inserted
Valid code for door 1 0 1
0 0
Valid code for door 2 1 1
Invalid card code
10
To unlock a door, a person must hold down the proper keys on the keypad and, then, insert
the card in the reader. The authorized keypad codes for door 1 are 101 and 110, and the
authorized keypad codes for door 2 are 101 and 011. If the card has an invalid code or if the
wrong keypad code is entered, the alarm will ring when the card is inserted. If the correct
keypad code is entered, the corresponding door will be unlocked when the card is inserted.
Design the logic circuit for this simple security system. Your circuit's inputs will consist of a
card code AB, and a keypad code CDE.The circuit will have three outputs XYZ (if X or Y = 1,
door 1 or 2 will be opened; if Z = 1, the alarm will sound).
Transcribed Image Text:Using any design approach, plan and design the following problem: (show the Block Diagram, Truth Table, Simplification Approach Solution, Circuit Diagram) 2. Simple Security System A simple security system for two doors consists of a card reader and a keypad. Cand Reader To Door To Dor 2 To Alam Logic Circuit D E Keypad A person may open a particular door if he or she has a card containing the corresponding code and enters an authorized keypad code for that card. The outputs from the card reader are as follows: A B No card inserted Valid code for door 1 0 1 0 0 Valid code for door 2 1 1 Invalid card code 10 To unlock a door, a person must hold down the proper keys on the keypad and, then, insert the card in the reader. The authorized keypad codes for door 1 are 101 and 110, and the authorized keypad codes for door 2 are 101 and 011. If the card has an invalid code or if the wrong keypad code is entered, the alarm will ring when the card is inserted. If the correct keypad code is entered, the corresponding door will be unlocked when the card is inserted. Design the logic circuit for this simple security system. Your circuit's inputs will consist of a card code AB, and a keypad code CDE.The circuit will have three outputs XYZ (if X or Y = 1, door 1 or 2 will be opened; if Z = 1, the alarm will sound).
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