A device employing small toggle switches, often arranged in a row, configures electronic equipment. Each switch represents a binary bit, collectively forming a binary number that controls specific functions or settings. For example, a set of eight switches allows for 256 unique configurations (2^8), affecting parameters like device address, baud rate, or operational mode.
This method offers a simple, hardware-based approach to customization without requiring complex software or programming interfaces. Historically significant in an era predating readily available microcontrollers and software configuration, it remains relevant for situations demanding straightforward, reliable, and non-volatile settings. It removes the need for batteries or other volatile memory solutions to retain configurations, proving valuable in industrial environments or applications requiring tamper-proof settings.
