Question

Explain about 8-to-3 Bit Priority Encoder?

Answer 1

Answer :-

diagram of the $8\times 3$  Priority Encoder

Output

D7 D6 D5 D4 D3 D2 D1 D0   Q2 Q1 Q0
----------------------------------
 1  X  X  X  X  X  X  X    1  1  1
 0  1  X  X  X  X  X  X    1  1  0
 0  0  1  X  X  X  X  X    1  0  1
 0  0  0  1  X  X  X  X    1  0  0
 0  0  0  0  1  X  X  X    0  1  1
 0  0  0  0  0  1  X  X    0  1  0
 0  0  0  0  0  0  1  X    0  0  1
 0  0  0  0  0  0  0  X    0  0  0

in $8\times 3$ Priority Encoder we have eight input lines as follows $D_0,D_1, D_2, D_3, D_4, D_5, D_6,D_7$ and the inputs are given with different combinations ,

$Q_2,Q_1,Q_0$ are the output

as we see in the diagram the inputs are given we get the output.

It is consists of and gates and or gates and also and gates.

the main function it selects the priority and gives the output.