Microprocessor In microprocessor based system I/O ports are used to interface the I/O devices and memory chips the I/P device only the O/P devices only all the I/O devices the I/O devices and memory chips the I/P device only the O/P devices only all the I/O devices ANSWER DOWNLOAD EXAMIANS APP
Microprocessor If the number of address bits in a memory is reduced by 2 and the addressability is doubled, the size of the memory (i.e., the number of bits stored in the memory) Remains unchanged Halves Doubles Increases by 2^(address bits)/addressability Remains unchanged Halves Doubles Increases by 2^(address bits)/addressability ANSWER DOWNLOAD EXAMIANS APP
Microprocessor XCHG instruction exchanges the content of H-L with ______ register pair. B-C PSW Stack Pointer D-E B-C PSW Stack Pointer D-E ANSWER DOWNLOAD EXAMIANS APP
Microprocessor A mask programmed ROM is erasable and programmable erasable electrically programmed at the time of fabrication programmed by the user erasable and programmable erasable electrically programmed at the time of fabrication programmed by the user ANSWER DOWNLOAD EXAMIANS APP
Microprocessor How many machine cycles are required for execution of IN 30H instruction 6 4 5 3 6 4 5 3 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 Khz. 2 Mhz. 8 Mhz. 1Khz. 2 Khz. 2 Mhz. ANSWER DOWNLOAD EXAMIANS APP
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