UGC-NET | UGC NET CS 2015 Dec – III | Question 1
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 ?
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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