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

 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
 Devices are accessed using IN and OUT instructions

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Microprocessor
Which one of the following is not correct?

 Bootstrap is a technique or device for loading first instruction
 An instruction is a set of bits that defines a computer operation
 Bus is a group of wires
 An interrupt signal is required at the start of every program

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