The number of positive real roots of the equation $${s^3} - 2s + 2 = 0$$ is __________.

The number of comparisons carried out in a $$4$$-bit flash type $$A/D$$ converter is

The contents of the accumulator in an $$8085$$ microprocessor is altered after the execution of the instruction.

The stack pointer of a microprocessor is at $$A001H.$$ At the end of execution of following instructions, the value of stack pointer is _____________
$$\eqalign{ & PUSH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,PSW \cr & XTHL \cr & PUSH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,D \cr & JMP\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,FC70H \cr} $$