Development of an Energy-Efficient Digital Trainer for Logic Design Education Using ATmega328P Microcontroller

In this paper, a digital trainer was designed and implemented. The purpose of a digital trainer is to teach students logic design skills in the digital electronics laboratory and provide them with hands-on experience in working with and modifying simple network digital circuits. The conventional digital electronics trainer is both costly to obtain and available in limited quantities in most electronics and computer engineering labs, which also leads to high maintenance expenses. Therefore, this project concentrates on developing a digital trainer that is both cost-effective and efficient. The digital trainer was designed with an ATmega328P Microcontroller, which helps monitor and control the functioning of the system features in accordance with a set of written program codes and whose operating voltage ranges from 3.3 to 5.5 volts. It was designed to involve a function generator and LEDs. The function generator requires 12V to generate different waveform outputs, while each LED requires a minimum voltage of 1.7V to glow. The user provides input through the logic switches to the logic gates, which are then read by the Microcontroller. When the input from the logic gate is detected, the ATmega328P Microcontroller sends output through to the LCD, displaying the features in operation with the LEDs and showing the result of the tested circuit.