Which of the following controls the 8051 timer1 especially when it is configured as a timer in mode'0', where gate and TR1 bits are attributed to be '1” in TMOD register ?a.All of theseb.TR1c.TF1d.External input at (INT1)
Question
Which of the following controls the 8051 timer1 especially when it is configured as a timer in mode'0', where gate and TR1 bits are attributed to be '1” in TMOD register ?a.All of theseb.TR1c.TF1d.External input at (INT1)
Solution
The 8051 timer1, when configured as a timer in mode '0', is primarily controlled by the TR1 bit when the gate and TR1 bits are set to '1' in the TMOD register.
Here's a step-by-step explanation:
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The 8051 microcontroller has a built-in timer which can be used for a variety of tasks. Timer1 is one of these timers.
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The mode of operation of this timer is determined by the TMOD (Timer Mode) register. In this case, it is set to mode '0'.
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The TMOD register also contains the GATE and TR1 bits. When these are set to '1', it means that the timer is enabled and can start counting.
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The TR1 bit is particularly important because it acts as a start and stop control for the timer. When TR1 is set to '1', the timer starts counting, and when it is set to '0', the timer stops.
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Therefore, the correct answer to the question is b. TR1. The TR1 bit controls the operation of the 8051 timer1, especially when it is configured as a timer in mode '0' and the GATE and TR1 bits are set to '1' in the TMOD register.
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