A submount can mount on it a semiconductor light-emitting device with high bonding strength, and a semiconductor unit incorporates the submount. The power supply provides an RF signal to electrodes of a storage device to create a trapping field. Also provided are a method and an apparatus for the above in which a plurality of gas types can be controlled in flow rate with high precision by one pressure-type flow control system. The inner optic zone has a relatively more positive power. The local pipeline utilizes the local stall to override the global stall, when appropriate, and to ensure that correct data is read for a local consumer and to operate more efficiently than a standard pipeline without a local stall. The control voltage is varied to modulate the current level set by the logic state at the inputs coupled to the front gates.