Microprocessor In 8085 microprocessor system with memory mapped I/O, which of the following is true? Devices are accessed using IN and OUT instructions There can be maximum of 256 input devices and 256 output devices Devices have 8-bit address line Arithmetic and logic operations can be directly performed with the I/O data Devices are accessed using IN and OUT instructions There can be maximum of 256 input devices and 256 output devices Devices have 8-bit address line Arithmetic and logic operations can be directly performed with the I/O data ANSWER DOWNLOAD EXAMIANS APP
Microprocessor Maximum number of I/O that can be addressed by the INTEL 8085 is 512 256 285 65536 512 256 285 65536 ANSWER DOWNLOAD EXAMIANS APP
Microprocessor Which one of the following is not correct? Bootstrap is a technique or device for loading first instruction Bus is a group of wires An interrupt signal is required at the start of every program An instruction is a set of bits that defines a computer operation Bootstrap is a technique or device for loading first instruction Bus is a group of wires An interrupt signal is required at the start of every program An instruction is a set of bits that defines a computer operation 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 8 Mhz. 1Khz. 2 Mhz. 2 Khz. 8 Mhz. 1Khz. 2 Mhz. 2 Khz. ANSWER DOWNLOAD EXAMIANS APP
Microprocessor HLT opcode means load accumulator with contents of register. end of program. store result in memory. load data to accumulator. load accumulator with contents of register. end of program. store result in memory. load data to accumulator. ANSWER DOWNLOAD EXAMIANS APP
Microprocessor In microprocessor based system I/O ports are used to interface the I/O devices and memory chips the O/P devices only all the I/O devices the I/P device only the I/O devices and memory chips the O/P devices only all the I/O devices the I/P device only ANSWER DOWNLOAD EXAMIANS APP
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