A method of making a semiconductor comprises depositing a group II-group VI compound onto a substrate in the presence of nitrogen using sputtering to produce a nitrogen-doped semiconductor. A gate structure is formed on the channel layer. The lumen extends beyond the distal end of the endoscope and deflects at the distal end as desired by the operator’s manipulation of a controller device. The position sensing system also includes a position component for selecting channels of the KVM switch according to the sensor reading. While the prior art starts out from space-efficient data structures and aim at lowering the O access cost, the invention starts out from the expanded table with 2m entries and aim at compressing it without an excessive increase in the number of accesses.