Abstract: The device relates to a circular electronic musical instrument having a keyboard with keys which produces polyphonic musical notes. The device is an organ which covers at least one octave of musical notes. The octaves are aligned in bands of concentric rings located on the top of the instrument. Each band of keys may contain one octave of notes. Notes in a first octave are next to or nearby identical notes in a second octave to make popular chords and songs easy to play. Notes may be played simultaneously which are octaves apart with one hand due to proximity of all the keys. A hand may extend over a centrally located loudspeaker and be used to vary the loudness and produce vibrato effects. A small overlay having information may be easily placed on the top of the keyboard to assist in learning songs by number, color, or other visual aids.

Abstract: A smart grid educational tool and system for using the same is provided. The smart grid relates generally to electro-mechanical systems with mechanical structures that produce electrical signals and switching systems similar to an actual smart power grid. This electrical system relates specifically to structures that easily and quickly demonstrate to students and utility workers the architecture and power sources used by the electric companies in the generation and distribution of electricity. The device utilizes an infrared beam of light sent through a spinning fan or other device, which breaks up the beam, to a receiving unit which produces an AC wave which is later converted to a single frequency sine wave and analyzed on a computer monitor.