Microprocessor
Which of the following pair of gates can form a latch?

A pair of cross coupled OR
A pair of cross coupled NAND
A cross coupled NAND/OR
A pair of cross copled AND

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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
 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

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