Microprocessor
How can we make any bit of a register “1”?

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

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

 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 have 8-bit address line
 Devices are accessed using IN and OUT instructions

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Microprocessor
A high on RESET OUT signifies that

 all the registers of the CPU are being reset
 all the registers and counters are being reset and this signal can be used to reset external support chip
 all the registers and counters are being reset
 processing can begin when this signal goes high

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