In order to understand the MIDI keyboard, we should know about the musical keyboard first. A musical keyboard is the set of adjacent depressible levers on a musical instrument which cause the instrument to produce sounds. Keyboards almost all share the common layout shown. Musical instruments with keyboards of this type include the piano, harpsichord, [...]

According to Sony Ericsson, Xperia X1 sets the example for a sophisticated combination of form with function in a full brushed-metal body. It boasts the world’s first arc-slider form factor, helping users to perfectly view the screen while typing.The diamond cut design on the four-way navigational keys and keyboard is ingeniously shaped introducing a “stressless” [...]