Abstract: A predictive keyboard is described. In an implementation, a keyboard comprises a plurality of indications of letters arranged, one to another, according to a QWERTY layout. Two rows of keys are arranged such that at least one of the keys includes at least two of the indications from at least two of the rows of the QWERTY layout.

Abstract: Fastening mechanisms are disclosed for engaging and disengaging device components while maintaining electrical connections among engaged components. A male fastening mechanism may include a front male head portion with a larger circumference than a relatively narrower lower male body portion. A female fastening mechanism may include an opening in a housing structure for receiving the front male head portion. A clip or spring may be arranged in the female housing surrounding portions of the opening. Moreover, the spring's terminating portions may be unconnected and protrude into the opening. The spring may be displaced to accommodate the front male head portion as it enters the female housing opening between the spring's terminating portions. The spring may retract or snap back inwards towards the relatively narrower lower male body portion as it passes through the opening and past the spring's terminating portions to engage the mechanisms and secure device components together.