1. Adders

2. Full adder

3. 4-bit ripple adder

4. Subtractor from adder

5. Carry look-ahead adder
Previous inputs are in this logic here to speed – up the carry propagation

6. 74x283 4-bit binary adder
G and P bits go to all previous bits

7. This chip is internally a Carry look-ahead adder
74x283 4-bit binary adder
This chip is internally a Carry look-ahead adder

8. 16-bit group-ripple adder built from 74X283 Adders

9. ALU

10. 74x181 4-bit ALU

11. 74x181 4-bit ALU

12. 4-bit ALUs: 74X381 and 74x382

13. 74x381 and 74x382 ALUs

14. 74x182 Lookahead Carry Circuit

15. 16-bit ALU using group-carry lookahead
74x182 Lookahead Carry Circuit
74x381 ALU
16-bit ALU using group-carry lookahead

16. Two ways to realize Selectable Addition

17. Verilog for addition

18. Verilog for adder sharing

19. Verilog continuous assignment statement

20. 8-bit 74x381-like ALU

21. Multiplier

22. Partial products in a 8*8 multiplier

23. Interconnections for a 8*8 multiplier

24. A Faster variant of a 8*8 combinational multiplier

25. Verilog for 8*8 combinational multiplier

26. Behavioral Verilog 8*8 multiplier

27. Verilog variable names for a 8*8 multiplier

28. Structural Verilog for a 8*8 combinational multiplier

29. Verilog testbench for a 8*8 combinational multiplier