Microprocessor
In a C expression using assignment operators, relational operators and arithmetic operators, the hierarchy of operations (in the absence of parenthesis) is

Assignment, relational, arithmetic
Arithmetic, relational, assignment
Relational, assignment, arithmetic
Arithmetic, assignment, relational

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

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Microprocessor
The stack pointer register in a microprocessor

 counts the number of programs being executing on the microprocessor
 counts the number of instructions being executing on the microprocessor
 keeps the address of the next instruction to be fetched
 holds the address of the top of the stack

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