Design an Excess 3 to BCD system using necessary parallel adder(s).

w’x’y + y’z + (x+z’)

NOT GATE Using NAND GATE

AND GATE Using NOR GATE

1 to 8 DEMUX

And Gate by NAND GATE

OR Gate Using Nand Gate

8:1 MUX USING TWO 4:1 MUXs

XNOR Gate

A+4 and A-4 according to even odd

10 person voting system

(B'+A'C)' Using Nand Gate And Nor Gate

lab_3

Flip-Flops using NAND Gate

OR GATE Using NOR GATE

Design a 13 people voting system using necessary parallel and full adder(s)

4x16 decoder

Priority Encoder Even Odd

Design a BCD to excess 5 system using necessary parallel adder(s).

lab_3

1 to 8 DEMUX

3:8 Decoder

BCD To 7 Segment Display

2:4 Decoder