1. Figure S1.1 The Motorola MPC 7400 PowerPC CPU

2. Figure S1.3 Truth table for INCLUSIVE-OR operation

3. Figure S1.4 Truth table for NOT operation

4. Figure S1.5 Truth table for EXCLUSIVE-OR operation

5. Figure S1.6 Truth tables foe the sum of two binary numbers

6. Figure S1.7 Standard logic gate representations

7. Figure S1.8 NAND and NOR gate representations

8. Figure S1.9 AND-OR operation made up from NAND gates

9. Figure S1.10 Selector circuit

10. Figure S1.11 Half adder

11. Figure S1.12 Full adder

12. Figure S1.13 Set-reset flip-flop

13. Figure S1.14 Several types of flip-flops

14. Figure S1.15 Logic to copy data from one register to another

15. Figure S1.16 Simplified implementation of the steps in a LOAD instruction