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→MCP23017
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====MCP23017====
====MCP23017====
−A chip that manages 16 Input Output Pins via an I2C connection. There are also two Interrupt lines that allow the MCP23017 to inform the Pi that a change has occurred.
+A 28 pin chip that manages 16 Input Output Pins via an I2C connection. There are also two Interrupt lines that allow the MCP23017 to inform the Pi that a change has occurred.
=====Addressing=====
=====Addressing=====