digital logic.......

lets answer that question.... 

1.Construct a digital  circuit and a truth table for following functions :

a)     C = A + B

b)    D = (C + B ). A

c)     F = X . Y . W + Z

Index	Binary	Decimal	Hexadecimal	Octal
1	1011
2	011
3	101010
4	10111
5	111001
6	10001111.11110000.01010101.11110001
7	11110110.01010101.00011101.11100101
8	11111110.01110010.11111110.00000010
9	11101111
10	11010111
11		4567
12		9001
13		790212
14		1957
15		256
16		27
17		96
18		1032
19		1111
20		1954
21			7A2
22			12A
23			1CF
24			EB96
Index	Binary	Decimal	Hexadecimal	Octal
25			B673
26			BACA23
27			ABCD3
28			AF04-CA26-FE4-D79
29			947D
30			B00774
31				205
32				856
33				5005
34				8
35				1
36				13754
37				624
38				275331
39				28
40				41