codes and rasterized them for display. By this time the team consisted of Bown, Doug O'Brien, Bill Sawchuck, J.R. Storey and Bob Warburton.

As the work continued, the team decided that locking the system to the particular hardware they were using was not appropriate, and started modifying the PDI system to be based on alphanumeric codes instead of binary numbers. A major advantage to this approach is that the data can be sent over common communications channels instead of relying on an 8-bit clean