Integration of Mixed Signal Processing Into Smart Locking Systems Using Finite State Machine

This advanced project integrates digital control logic with analog processing to build a secure smart locking system governed by a Finite State Machine. At the heart of the system is a Moore state machine written in Verilog, which manages the sequential validation of access codes or unlock sequences. Because the real world operates in continuous analog signals while digital processors require discrete values, mixed-signal components bridge this divide. An Analog-to-Digital Converter (ADC) translates incoming analog sensor voltages or key signals into digital data that the logic controller can evaluate. Conversely, a Digital-to-Analog Converter (DAC) takes digital control commands and converts them back into analog output signals, capable of driving actuator mechanisms like solenoids or relays for the lock itself. A dedicated clock generator coordinates the timing of state transitions across the digital architecture, ensuring synchronized operation. Using electronic design automation tools, the system's digital behavior is co-simulated alongside analog circuit dynamics, allowing engineers to verify that the discrete hardware and HDL-based logic seamlessly interact before physical deployment.