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TIMSK register is used for?

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in Microcontroller by (14.6k points)
TIMSK register is used for?

(a) knowing the status of the timer count

(b) used for masking the interrupts flags of the Timer0, Timer1 and Timer2

(c) it is used for enabling all the timer interrupts

(d) it is used for resetting the value of the interrupts

This question was addressed to me during an online exam.

This intriguing question originated from Interrupt Programming in chapter AVR Microcontroller of Microcontroller

1 Answer

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by (24.2k points)
Right answer is (b) used for masking the interrupts flags of the Timer0, Timer1 and Timer2

To explain I would say: TIMSK is used for masking the interrupt flags of the timers. They mask the bits of the timer flags if the D7 bit of the SREG register is set to 1 or when firstly all interrupts are enabled.

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