Q. If SUBB A,R4 is executed, then actually what operation is being applied?

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Q. A valid division instruction always makes:

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Q. In 8 bit signed number operations, OV flag is set to 1 if:

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Q. In unsigned number addition, status of which bit is important?

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Q. Which instructions have no affect on the flags of PSW?

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Q. ANL instruction is used

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Q. CJNE instruction makes

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Q. XRL, ORL, ANL commands have

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Q. What is the clock source for the timers?

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Q. What is the frequency of the clock that is being used as the clock source for the timer?

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Q. What is the function of the TMOD register?

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Q. What is the maximum delay that can be generated with the crystal frequency of 22MHz?

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Q. Auto reload mode is allowed in which mode of the timer?

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Q. Find out the roll over value for the timer in Mode 0, Mode 1 and Mode 2?

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Q. What steps are followed when we need to turn on any timer?

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Q. If Timer 0 is to be used as a counter, then at what particular pin clock pulse need to be applied?

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Q. In the instruction “MOV TH1,#-3”, what is the value that is being loaded in the TH1 register ?

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Q. TF1, TR1, TF0, TR0 bits are of which register?

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Q. Which devices are specifically being used for converting serial to parallel and from parallel to serial respectively?

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Q. What is the difference between UART and USART communication?

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