Microprocessor The 8085 microprocessor uses a crystal of frequency 6.25 Mhz. The T-state value is 320ns 960ns 1280ns 640ns 320ns 960ns 1280ns 640ns ANSWER DOWNLOAD EXAMIANS APP
Microprocessor Assuming LSB is at position 0 and MSB at position 7, which bit positions are not used (Undefined) in flag register of an 8085 microprocessor? 1, 2, 5 2, 3, 5 1, 3, 5 1, 3, 4 1, 2, 5 2, 3, 5 1, 3, 5 1, 3, 4 ANSWER DOWNLOAD EXAMIANS APP
Microprocessor The output data lines of microprocessor and memories are usually tristated because It increases the speed of data transfer over the data bus More than one device can transmit information over the data bus by enabling only one device at a time More than one device can transmit over the data bus at the same time The data line can be multiplexed for both input and output It increases the speed of data transfer over the data bus More than one device can transmit information over the data bus by enabling only one device at a time More than one device can transmit over the data bus at the same time The data line can be multiplexed for both input and output ANSWER DOWNLOAD EXAMIANS APP
Microprocessor HLDA signal in 8085 performs the following operation: Hold the data in the accumulator until the microprocessor is turned OFF. Indicates that the CPU has received the HOLD request and that it will relinquish the bus in the next clock cycle. Indicates that another master is requesting the use of the address and data buses. Indicates that the CPU has not received the HOLD request. Hold the data in the accumulator until the microprocessor is turned OFF. Indicates that the CPU has received the HOLD request and that it will relinquish the bus in the next clock cycle. Indicates that another master is requesting the use of the address and data buses. Indicates that the CPU has not received the HOLD request. ANSWER DOWNLOAD EXAMIANS APP
Microprocessor While using a frequency counter for measuring frequency, two modes of measurement are possible: Period time Frequency mode There is a ‘cross-over frequency’ below which the period mode is preferred. Assuming the crystal oscillator frequency to be 4MHz, the crossover frequency is given by 2 Khz. 8 Mhz. 2 Mhz. 1Khz. 2 Khz. 8 Mhz. 2 Mhz. 1Khz. ANSWER DOWNLOAD EXAMIANS APP
Microprocessor DS directive in 8085 Forces the assembler to reserve a specified number of consecutive bytes in the memory Forces the assembler to reserve one byte of memory None of these Forces the assembler to reserve a specified number of bytes in the memory Forces the assembler to reserve a specified number of consecutive bytes in the memory Forces the assembler to reserve one byte of memory None of these Forces the assembler to reserve a specified number of bytes in the memory ANSWER DOWNLOAD EXAMIANS APP
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