Microprocessor
S0 and S1 pins are used for

 acknowledging the interrupt
 indicating the processor’s status
 serial communication
None of these

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

 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
 Devices have 8-bit address line

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