| 摘要 |
PURPOSE: A piano keyboard for a computer is provided to selectively output the piano keyboard information applied from the piano keyboard and the input key information applied from a general computer keyboard by a selection switch. CONSTITUTION: The piano keyboard(200) comprises a cable(C) to electrically connect a computer(100) with a keyboard(300) and a keyboard connection port(P), and controls to output the piano keyboard information of piano keyboard or the text information applied from a keyboard to the computer through the switching operation. The piano keyboard includes a keyboard key matrix to output an electric signal corresponding to a switching element inputted from a user by configuring a plurality of switching elements confronting to the many function keys and keyboard key, a data conversion processor to output the electric signal from the keyboard key matrix converted into a data format outputted from the keyboard, a switch to control the output path of switching operator, and a switch operator to operate a switch in order to switch the output path of data conversion processor and keyboard based on the control signal from the switch.
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