1. If you run the wires across the plugboard matrix diagonally, it will eliminate rotor positions 500 times faster.

2. Breadboard (plugboard) has sets of miniature sockets laid out on a 0.1 inch grid which will accept the manual insertion of component leads and tinned copper wire (TCW) links (Figure 10.6 a)

3. It was the task of the Bombe to discover the daily key - wheel order, wheel settings and plugboard configuration - to enable the 3-5,000 Enigma messages intercepted each day to …