Microprocessor
The stack pointer register in a microprocessor

 holds the address of the top of the stack
 counts the number of programs being executing on the microprocessor
 keeps the address of the next instruction to be fetched
 counts the number of instructions being executing on the microprocessor

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Microprocessor
In 8085 microprocessor system with memory mapped I/O, which of the following is true?

 Devices are accessed using IN and OUT instructions
 Devices have 8-bit address line
 Arithmetic and logic operations can be directly performed with the I/O data
 There can be maximum of 256 input devices and 256 output devices

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Microprocessor
In 8085 microprocessor , let the accumulator contains the value 0AH and register C contains the value 05H. After CMP C instruction is executed, the

 zero flag will be reset and carry flag will be set
 zero and carry flags will be reset
 zero and carry flags will be set
 zero flag will be set and carry flag will be reset

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