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Door lock system This system uses a 4 4 keypad for user password input and lights up a green LED if the password is correct.
Door lock system
This system uses a keypad for user password input and lights up a green LED if the password is correct. An LCD shows text for example "Enter password" etc...
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Beginning Databases With PostgreSQL From Novice To Professional
Authors: Richard Stones, Neil Matthew
2nd Edition
1590594789, 978-1590594780
