Description: Input voltage refers to the voltage applied to a device or circuit, and it is a fundamental parameter in the design and operation of electronic systems. This voltage is crucial for the proper functioning of components such as microcontrollers, sensors, and actuators. In various electronic platforms, the input voltage determines the amount of energy supplied to the system, affecting its performance and stability. The input voltage must be within a specific range to avoid damage to the components; for example, many microcontroller boards typically operate between 7 and 12 volts. Outside of this range, the device may experience malfunction or even permanent failure. Additionally, the input voltage influences energy conversion and system efficiency, as inadequate voltage can result in excessive energy consumption or the inability to perform specific tasks. Therefore, understanding input voltage is essential for designers and electronics enthusiasts, as it ensures that circuits operate optimally and safely.