4 BIT PARITY GENERATOR AND CHECKER

FLIP FLOP

4 to 1 multiplexer

parallel in serial out

4 bit parallel in parallel out

4 bit serial in and parallel out

flip flops

FLIP FLOP

FLIP FLOP

1 BIT MAGNITUDE COMPARATOR

3 BIT PARITY GENERATOR AND CHECKER

full adder 1

half adder 4

half adder 1

1 bit parallel in parallel out

2 BIT MAGNITUDE COMPARATOR

4BIT BCD TO EXCESS THREE

4 BIT GRAY TO BINARY

3 BIT PARITY GENERATOR AND CHECKER

4 BIT PARITY GENERATOR AND CHECKER

1 bit magnitude comparator

2 Bit Magnitude Comparator

full subtractor 1

half subtractor 3

half subtractor 4

half adder 2

full adder 3

full subtractor 2

full adder 2

half adder 3

full subtractor 3

half subtractor 2

4BIT BINARY TO GRAY CODE CONVETER

4 BIT EXCESS3 TO BCD

FLIP FLOP

half subtractor 1