Digital code Lock System
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A digital code lock system with a buzzer and servo motor is an embedded project that enhances security. When the correct code is entered, the microcontroller triggers a servo motor to unlock a door or container. If an incorrect code is entered, a buzzer sounds as an alert.
Description
A Digital Code Lock System using the 8051 microcontroller is an embedded security project designed to control access based on a secret passcode entered through a keypad. The system is ideal for securing doors, cabinets, or any restricted area, and it operates by comparing the entered code with a pre-programmed password. If the correct code is entered, the system unlocks the mechanism, and if the wrong code is entered, it triggers an alert using a buzzer. This project provides a hands-on approach to learning microcontroller-based programming and interfacing with different components.
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An XOR (Exclusive OR) gate is a digital logic gate that outputs true (1) only when the number of true inputs is odd. For two inputs, the output is high when the inputs are different. XOR gates can be constructed using basic logic gates or directly with transistors (BJT or MOSFET). Using transistors, we can design compact, efficient circuits for custom digital logic applications.
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