EXPERIMENT NO.
7 :
Design and realize 4 to 2, Octal to Binary, Priority Encoder.
1. 4 to 2 Encoder :
Burhanuddin_Kanodwala
A1 = Y3 + Y2
A0 = Y3 + Y1
INPUT OUTPUT
Y3 Y2 Y1 Y0 A1 A0
0 0 0 1 0 0
0 0 1 0 0 1
0 1 0 0 1 0
1 0 0 0 1 1
2. Octal to Binary Encoder
Burhanuddin_Kanodwala
A2 = Y7 + Y6 + Y5 + Y4
A1 = Y7 + Y6 + Y3 + Y2
A0 = Y7 + Y5 + Y3 + Y1
INPUT OUTPUT
Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 A2 A1 A0
0 0 0 0 0 0 0 1 0 0 0
0 0 0 0 0 0 1 0 0 0 1
0 0 0 0 0 1 0 0 0 1 0
0 0 0 0 1 0 0 0 0 1 1
0 0 0 1 0 0 0 0 1 0 0
0 0 1 0 0 0 0 0 1 0 1
0 1 0 0 0 0 0 0 1 1 0
1 0 0 0 0 0 0 0 1 1 1
3. Priority Encoder :
Burhanuddin_Kanodwala
A1 = Y3 + Y2
A0 = Y3 + Y2’Y1
V = Y3 + Y2 + Y1 + Y0
INPUT OUTPUT
Y4 Y2 Y1 Y0 A1 A0 V
0 0 0 0 X X 0
1 0 0 0 0 0 1
X 1 0 0 0 1 1
X X 1 0 1 0 1
X X X 1 1 1 1