Abstract: An electronic musical instrument having key input means selectively actuable to cause the production of sounds corresponding to respective notes of the musical scale, comprises a memory circuit for storing the respective notes, and a clear circuit actuated to partially amend at least one of the notes from the contents of the memory means.

Abstract: There is disclosed a new and useful taximeter which allows simple changes in tariff display conditions in various operating modes without any change or modification in circuit construction. The taximeter using a memory device removable from the taximeter body and containing lamp enabling and disabling information is capable of optionally setting tariff display conditions in respective ones of operating modes without reconstructing the circuit arrangement of the taximeter body.

Abstract: An anti-skid brake control system wherein the brake force is automatically reduced in response to the relationship between the sensed values of the vehicle velocity and the wheel velocity, may erroneously operate at an undesired time when the vehicle is making a turn. The above-mentioned erroneous operation is caused by the misdetermination of the vehicle velocity which based on the difference of the velocities between the outside rear wheel and the inside rear wheel while making the turn. To avoid the erroneous operation, a steering wheel sensor is provided for sensing the angle of a steering wheel. Output signals of the steering wheel sensor are applied to a compensation circuit for compensating output signals of a wheel sensor which detects the velocity of the wheel of a wheeled vehicle, the detected value being used for the determination of the velocity of the vehicle, for the purpose of minimizing the difference of the wheel velocities.