Submitted by: Submitted by abhishekmal
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Pages: 4
Category: Music and Cinema
Date Submitted: 12/10/2013 09:03 PM
1) Design a BCD-to-decimal decoder using the unused combinations of the BCD code as don’t –care conditions.
Ans
|D |C |B |A |
|0 |1 |1 |1 |
|X |X |X |X |
|1 |1 |X |x |
00
01
11
10
The Output Equation for A output –
B0= D+CA+B+C’A’
BA
DC 00 01 11 10
|1 |1 |1 |1 |
|1 |1 |1 |0 |
|X |X |X |X |
|1 |1 |X |X |
00
01
11
10
The Output Equation for B output –
B1=D+C’+B’+A
BA
DC 00 01 11 10
|1 |1 |1 |0 |
|1 |1 |1 |1 |
|X |X |X |X |
|1 |1 |X |X |
00
01
11
10
The Output Equation for C Output –
B2= B’+A+C+D
BA
DC 00 01 11 10
|1 |0 |1 |1 |
|0 |0 |0 |1 |
|X |X |X |X |
|1 |1 |X |X |
00
01
11
10
The output Equation for D=
D=D+A’+D’C’B
BA
DC 00 01 11 10
|1 |0 |0 |1 |
|0 |0 |0 |1 |
|X |X |X |X |
|1 |0 |X |X |
00
01
11
10
The Output Equation for E =
E=C’A’+CB
BA
DC 00 01 11 10
|1 |0 |0 |0 |
|1 |1 |0 |1 |
|X |X |X |X |
|1 |1 |X |X |
00
01
11
10
The Output Equation of F=
F=D+BA’C+B’A’D’+CB’
BA
DC...