# Basics of 8085 Microprocessor

 Question 1
In an 8085 microprocessor, the number of address lines required to access a 16 K byte memory bank is __________.
 A 16 B 14 C 12 D 15
GATE EC 2020   Microprocessors
Question 1 Explanation:
\begin{aligned}2^{n}&=N \\ n & \rightarrow \text{ Number of Address Lines} \\ N & \rightarrow \text{ Number of Memory Locations} \\ 2^{n}&=16 KB \\ &=2^{4} (2^{10}) \\ &=2^{14}\\ n&=14\end{aligned}
 Question 2
In an 8085 microprocessor, the shift registers which store the result of an addition and the overflow bit are, respectively
 A B and F B A and F C H and F D A and C
GATE EC 2015-SET-1   Microprocessors
Question 2 Explanation:
Shift register are accumulator and flag register
(A and F).
There are 2 questions to complete.