Abstract: An output buffer control circuit in which an amplitude of a gate input of a MOS transistor for the output's sake is variable by virtue of a program or a mask option, thus there is no electromagnetic interference caused by excessive output current and unnecessary current consumption, is suitable in use for universal integrated circuit. A gate voltage selector circuit selects one out of three voltages (V.sub.DD +.alpha.), V.sub.DD, and (V.sub.DD -.beta.) in accordance with the combination of selection signals S.sub.1, S.sub.2, and S.sub.3. A level conversion circuit performs ON-OFF of a voltage V.sub.1 selected by the gate voltage selector circuit in accordance with a source output signal to be outputted to an outer section with the same cycle as the source output signal, thus communicating it as a gate input to an n-MOS transistor of an output buffer. It is equivalent to that it causes amplitude V.sub.DD of the source output signal to be performed level conversion toward the voltage V.sub.

Abstract: A washing machine having a friction apparatus which can uniformly wash articles to be washed and can improve the washing efficiency. The friction apparatus is installed in openings formed at a side wall of a spin tub. Upper and lower slots are formed at upper and lower portions of the openings. The friction apparatus has a cylinder, a rod which extends through the cylinder, a plurality of blades which are integrally formed with an outer wall of the cylinder, and first and second bushings fixedly inserted into the upper and lower slots. An inner wall of the cylinder is formed with a spiral groove, and the rod is provided at its outer wall with a spiral strip which is engaged with the spiral groove. The friction apparatus fully makes contact with the articles while the washing cycle is being carried out thereby uniformly washing the articles and improving the washing efficiency.