The present invention discloses a manual electric generating device, which comprises an upper casing, a lower casing; a rotor, a fixed stand, a hollow cylinder, a coil for generating power supply; and a printed circuit board for processing and outputting the power supply. The system can comprise components including a processor, an input device, a database, a transformation module, an emulation recording module, an integration engine, an output module, and an output device, wherein each component is operable in itself to perform it’s function in the system and operable with other system components to provide a system to a user for learning music. For discharging a gas from the system, the gas is flown through the adsorption unit for adsorption of harmful substances and then discharged from a vent. The first nanowire has a first size in a first direction and a second size in a second direction, and the second nanowire has a second size in the first direction and substantially the second size in the second direction. Each partition respectively runs at least one associated data processing application.