Half adder

Parity Checker

Binary to gray code

Full subtractor

Half adder using universal NAND gate

Full subtractor using universal NAND gate

Full subtractor using universal NAND gate

3 Bit Parity generator

2- Bit Comparator

2- Bit Comparator

cascading MUX

Half adder using universal NAND gate

4 bit BCD adder

Half subtractor using universal NAND gate

Full adder using universal NAND gate

4 Bit Parity generator

3 Bit Parity generator

Full adder using basic gate

Half subtractor

Half subtractor

Full subtractor

Full subtractor

1 bit comparator

1 bit comparator

2 bit comparator

2 bit comparator

2 bit comparator

2 bit comparator

2 bit comparator

8:1 multiplexer

BCD adder using 4-bit binary adder

4:1MUX using 2:1 MUX

8:1 MUX using 4:1 and 2:1 MUX

1:4 DEMUX

1:4 DEMUX

1:8 DEMUX

1:8 DEMUX

1:8 DEMUX

1:4 DEMUX using 1:2 DEMUX

1:8 DEMUX using 1:4 DEMUX

demux

4- BIT PARITY GENERATOR

2 BIT COMPARATOR

Half subtractor using universal NAND gate

Binary to gray code converter

4:1 mux using 2:1 mux

1:4 DEMUX using 1:2 DEMUX

4 Bit Parity generator

Full Adder using DEMUX

Full Adder using DEMUX

1:4 DEMUX

8:1 MUX using 4:1 and 2:1 MUX

8:1 MUX

1:8 DEMUX using 1:4 DEMUX

BCD to Excess-3 code

1:8 DEMUX using 1:4 DEMUX

Binary to gray code converter

Half adder

4:1MUX using 2:1 MUX

4-bit parity checker

4-bit parity checker

BCD to Excess-3 code

4

4

Full adder using universal NAND gate

Full adder using basic gate

8:1 multiplexer

BCD adder using 4-bit binary adder