Q. If the pins of the keyboard are used as an interrupt, then these pins will cause interrupt of what type?

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Q. What will happen if two keys of the keyboard are pressed at a time?

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Q. Why initially all keys are considered open before detecting the key pressed?

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Q. Which of the following is correct about the word resolution in ADC DAC converters in AVR’s?

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Q. In an ADC, we can calculate the output voltage from the formula

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Q. ADC0848 is a ____________ bit converter?

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Q. Which of the following factors can affect the step size calculation?

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Q. Which of the following is correct about the word sensors?

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Q. Why do we need to apply the concept of signal conditioning to a sensor?

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Q. Which of the following is correct about LM35 based sensors?

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Q. What is the difference between the LM34 and the LM35 based sensors?

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Q. Every transducer must be connected with the signal conditioning circuit?

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Q. LM35 provides _______ V for each degree count?

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Q. Why for the 8 bit analog input we select Vref as the 2.56V?

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Q. What is the temperature for LM35 sensor if the analog output is 0011 1001?

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Q. In an external hardware, their are how many pins available for the LM35 and the LM34 based sensors?

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Q. Do LM34 and LM35 based sensors have linear output?

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Q. 8255 is a ____ pin IC.

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Q. 8255 has handshaking capability?

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Q. The 8255 can be programmed in any of the

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