The keys are hard keys and/or virtual keys.

The keys of the said keyboard are respectively used as consonant keys, vowel keys, tone keys and radical keys of Chinese characters.

The push keys include real code keys and virtual code keys.

Only those keys (5) that were assigned a function are unlocked, such that the unlocked keys (5) form function keys and the locked keys (5) form dummy keys.

A key carrier (2) having keys (5) attached thereto is provided, wherein all keys (5) on the key carrier (2) are releasably locked and thus immovable.

The assembly includes free-floating, forward keys and free-floating, reverse keys opposed to the forward keys.

Instead of the traditional 7 lower keys (white) and 5 upper keys (black), this arrangement has 6 lower keys and 6 upper keys.

Same feature on fixed keys integrates central cursor keys.

The keys are selected such that keys included in the first subgroup of keys have higher relative usage than the keys comprised in the second subgroup of keys.

The plurality of overloaded keys comprises at least three injectively overloaded keys disposed in a first row of keys.

Further, these button group and individual buttons are displayed as the operation buttons on the display device.

The left keyboard section (100) preferably includes alphanumeric keys, functions keys, and other keys usually grouped together with those keys in conventional keyboards.

For example, on a keypad having ten keys an average of four phonetic symbols are mapped to each of the ten keys on the keypad.

Visually enhanced surrounding keys may have enhanced brightness relative to keys not surrounding keys so determined.

The product has printed keycaps representing an alpha/numeric keyboard, call buttons and other buttons typical of mobile phones.