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The pins SS, SCK, MOSI and MISO on the Arduino belong to the ___ bus.

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The pins SS, SCK, MOSI and MISO on the Arduino belong to the ___ bus.

(a) I2C

(b) SPI

(c) GPIO

(d) Ethernet

This question was addressed to me in an interview.

This intriguing question originated from Board Pinout Structure topic in portion Board Specifications and Types of Arduino

1 Answer

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Best answer
The correct answer is (b) SPI

The best explanation: The Pins SS (Select Slave), SCK (Serial Clock), MOSI (Master Output Slave Input), and MISO (Master Input Slave Output) belong to the SPI (Serial Peripheral Interface) Bus which is used as a form of wired communication between two or more microcontrollers.

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