A method and device for programming an array of individually controllable elements configured to impart a beam with a pattern. Instead of a circular cross-section profile, the venturi tube has a cross-section of a polygon with no parallel sides, so that considerably less aerodynamic noise is generated than if the venturi tube’s cross-section was circular. Further, antibodies against the expressed DNA sequences and other compounds reactive with the expressed DNA sequence are also part of the invention. In response to an off event at the circuit breaker following a current flow condition thereat, the real time clock circuit is configured to generate time information relating to the circuit breaker being off as a result of the off event for use by the processing circuit. Due to flexible linking of the cannulae at their distal ends, the cannulae can be easily manipulated without disconnection and without a need for use of extraneous X-raying for reorientation of the cannulae.