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There are ___ PWM pins and ____ ADC pins on the Atmega168?

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There are ___ PWM pins and ____ ADC pins on the Atmega168?

(a) 6, 8

(b) 2, 9

(c) 3, 1

(d) 9, 1

This question was posed to me in class test.

This question is from Microcontroller Specifications in portion AtMega Microcontroller Specifications of Arduino

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Right choice is (a) 6, 8

Easiest explanation: The Atmega168 has 8 ADC Pins and 6 PWM Pins. The ADC pins connect to the onboard Analog to Digital Convertor of the Arduino and the PWM pins provide Pulse Width Modulated output since a digital circuit like a microcontroller cannot provide a perfect analog wave.

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