4 Bit Adder-Subtractor

Full Subtractor

4 Bit Adder

Common bus using multiplexers

Flip Flops

1 bit adder

1 bit adder

Half Adder Long Circuit\

Half Subtractor Circuit

4 Bit SISO Shift Register

SISO

4 bit SIPO Shift Register

4 bit PIPO shift Register

Counters

1 bit adder

PISO SHIFT REGISTER

4-Bit Synchronous Decade Counter

Buffers

2 Bit Adder subtractor

Untitled

4 Bit BCD Adder

4 BIT ALU