The button S3 on Explorer 16 board is connected to a pin of the Microcontroller. Mention the name/names, number of that pin, and the purpose of that pins.

The button S3 is connected to RD6, pin #83.

The purpose of pin RD6 (pin #83) on the Microcontroller is to provide the input for button S3 on the Explorer 16 board.

The purpose of pin RD6 is to serve as a general-purpose input/output (GPIO) pin. In the case of the Explorer 16 board, pin RD6 is specifically used as the input for the S3 button. The purpose of the S3 button is to provide a user-input for various functions or operations in a microcontroller-based system.

To determine the name/names, number, and purpose of the pin that button S3 is connected to on the Explorer 16 board, you would need to refer to the documentation or the schematic diagram of the board.

1. Documentation: The documentation of the Explorer 16 board, such as the user manual or datasheet, should provide information about the pin assignments for buttons and microcontroller pins.

2. Schematic Diagram: The schematic diagram of the Explorer 16 board will have details about the connections between the buttons and the microcontroller. You can find this diagram either in the board's documentation or by searching online for the schematic diagram of the board.

By referring to the documentation or schematic diagram, you should be able to find the specific pin name/names, number, and purpose of the pin to which the button S3 is connected.

However, based on the information provided in your question, the button S3 is connected to pin RD6, which is pin number 83. The purpose of this pin may vary depending on the microcontroller used on the Explorer 16 board, but typically pins on a microcontroller can be configured for various purposes such as input, output, or specific peripheral functions.