December2015 cs Q1

0. The three outputs x₁x₂x₃ from the 8 X 3 priority encoder are used to provide a vector address of the form 101x₁x₂x₃00. What is the second highest priority vector address in hexadecimal if the vector addresses are starting from the one with the highest priority ?

Answer
Comment
Array

Option : B
Explanation :
The priority preference for 8 X 3 priority encoder will be:
000 First
001 Second
010 Third
011 Fourth
100 Fifth
101 Sixth
110 Seventh
111 Eighth
According to question second highest priority vector address will be 10100100. i.e. 1010 0100. When we convert it to hexadecimal then it will be A4. So, option (B) is correct.

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