Switch matrix

A switch matrix for use in a keypad, said switch matrix comprising:

• a plurality of key positioning members, each of said plurality of key positioning members comprising a knob;
• and
• at least one key having an opening defined by a sidewall, said opening configured to receive said knob to removably attach said at least one key to said knob with a friction fit;
• wherein said at least one key may be attached to any of said plurality of key positioning members such that a configuration of said at least one key on said keypad may be varied.

A method of attaching one or more keys to a keypad comprising the steps of:

• (a) providing a switch matrix having a plurality locations where said one or more keys may be attached;
• (b) attaching said switch matrix to said keypad;
• (c) providing said one or more keys of a first size and shape;
• (d) selecting one or more of said plurality of locations on said switch matrix to attach said one or more keys;
• and
• (e) pressing said one or more keys on said one or more of said selected plurality of locations to attach said one or more keys to said keypad.

A method for attaching keys of different sizes and shapes to a keypad, said method comprising:

• (a) providing a switch matrix having a plurality of attaching means for removably attaching said keys;
• (b) providing said keys having corresponding attaching means independent of the size and shape of said keys;
• (c) selecting a configuration of said keys to be attached on said keypad;
• (d) selecting said attaching means corresponding to the configuration of said keys to be attached on said keypad;
• and
• (e) joining said corresponding attaching means to said selected attaching means to thereby attach said keys to said keypad.