A digital controller for low-power DC-DC switch mode power supplies suitable for on-chip implementation and use in portable battery-powered systems is provided. The method includes, without requiring concurrent locking of more than one queue, determining if a space is available in each queue for writing a corresponding portion of the data, and if available, reserving the spaces in the queues. The invention further limits the necessary width of a thin film conductor passing through the sclera by use of a multiplexer external to the sclera and a demultiplexer internal to the sclera. The first support member has a depth less than the depth of the second support member, and each of the shelves matches the depth of the first support member on one side edge and matches the greater depth of the second support member along the other side edge. In some embodiments, the handle can include a pair of handle portions. The method for playing multimedia objects comprises synchronizing at least one attribute value of the at least one multimedia object with an attribute value of a multimedia player module provided in the mobile terminal; and playing the at least one multimedia object in accordance with the synchronized at least one attribute value using the multimedia player module.