Question

7. Design a four-input priority encoder with inputs $D_0$, $D_1$, $D_2$, $D_3$ and outputs $x$, y, $V$ with $V$ indicating a valid input ($V$=0 when all the inputs are zero else $V$=1) but with input $D_0$ having the highest priority and input $D_3$ the lowest priority as shown in Table 1 below. Table1 Priority encoder Inputs Outputs $D_3$ $D_2$ $D_1$ $D_0$ $x$ $y$ $V$ 0 0 0 0 X X 0 X X X 1 0 0 1 X X 1 0 0 1 1 X 1 0 0 1 0 1 1 0 0 0 1 1 1

          7. Design a four-input priority encoder with inputs $D_0$, $D_1$, $D_2$, $D_3$ and outputs $x$,
y, $V$ with $V$ indicating a valid input ($V$=0 when all the inputs are zero else $V$=1)
but with input $D_0$ having the highest priority and input $D_3$ the lowest priority as
shown in Table 1 below.
Table1 Priority encoder
Inputs
Outputs
$D_3$ $D_2$ $D_1$ $D_0$ $x$ $y$ $V$
0 0 0 0 X X 0
X X X 1 0 0 1
X X 1 0 0 1 1
X 1 0 0 1 0 1
1 0 0 0 1 1 1

7. Design a four-input priority encoder with inputs D0, D1, D2, D3 and outputs x,
y, V with V indicating a valid input (V=0 when all the inputs are zero else V=1)
but with input D0 having the highest priority and input D3 the lowest priority as
shown in Table 1 below.
Table1 Priority encoder
Inputs
Outputs
D3 D2 D1 D0 x y V
0 0 0 0 X X 0
X X X 1 0 0 1
X X 1 0 0 1 1
X 1 0 0 1 0 1
1 0 0 0 1 1 1

Added by Robert A.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Chai Santi

Step 1

The inputs are $ D_0, D_1, D_2, D_3 $ and the outputs are $ x, y, V $. Show more…

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7. Design a four-input priority encoder with inputs D0, D1, D2, D3 and outputs x y, V with V indicating a valid input (V=0 when all the inputs are zero else V=1) but with input D0 having the highest priority and input D3 the lowest priority as shown in Table 1 below. Table1 Priority encoder Inputs Outputs D3 D2 D1 D0 x y V 0 0 0 0 x x 0 x x x 1 0 0 1 x x 1 0 0 1 1 x 1 0 0 1 0 1 1 0 0 0 1 1 1