Abstract: A machine learning system comprising a power source, a central processor, and a first computing device. The central processor is configured to receive artificial-intelligence-specific models and creates at least one artificial-intelligence-specific task based on the artificial-intelligence-specific model. The first computing device is connected to the power source to receive power and the central processor to receive artificial-intelligence-specific tasks. The first computing device including a first base, a plurality of first processing units, and a first switch. The first base including a plurality of first traces. The first processing units are coupled with the first traces and configured to perform artificial-intelligence-specific tasks. The first switch is coupled with the first traces and connected to the first processing units via the first traces, wherein the first switch receives and distributes the artificial-intelligence-specific tasks amongst the first processing unit.

Abstract: A brass instrument having multiple tuning slide valve blocks is provided with a unique pair of directional air control valves for selecting one tuning slide valve block. The directional air control valves have rotating valve blocks that are disposed on a common axle to be rotated together. A novel lever mechanism biases the axle in a normal position in which the primary tuning slide valve blocks are connected between the mouthpiece and the sound funnel. The lever mechanism permits the rotation of the axle to cause the direction control valves to connect either of the secondary tuning slide valve blocks between the mouthpiece and sound funnel.