Microprocessor
The operating modes of 8255 A are called

Mode 0, mode 2 and mode 3
Mode 0 and mode 2
Mode 0 and mode 1
Mode 0, mode 1 and mode 2

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Microprocessor
In an 8085 microprocessor based system, the contents of SP are 2000H. POP H instruction will transfer the contents of memory location

 2000H and 1FFFH to H and L registers respectively
 2001H and 2000H to H and L registers respectively
 2000H and 1999H to H and L registers respectively
 2001H and 2002H to H and L registers respectively

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