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

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

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Microprocessor
Which of the following statements for intel 8085 is correct?

 Program Counter (PC) specifies the address of the instruction last executed
 PC specifies the address of the instruction to be executed
 PC specifies the number of instructions executed so far
 PC specifies the address of the instruction being executed

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Microprocessor
How can we make any bit of a register “0”?

 OR that bit with “1” and remaining bits with “0”.
 AND that bit with “0” and remaining bits with “1”.
 AND that bit with “1” and remaining bits with “0”.
 OR that bit with “0” and remaining bits with “1”.

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