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An input system that mounts over a portion of a keyboard, which system may include an input device corresponding to at least one keyboard key covered by the input system. The input device may comprise a key or other input mechanism easily accessible to the user, and at least one of the input mechani

An input system that mounts over a portion of a keyboard, which system may include an input device corresponding to at least one keyboard key covered by the input system. The input device may comprise a key or other input mechanism easily accessible to the user, and at least one of the input mechanisms may functionally correspond to one of the covered keyboard keys. The input mechanisms may be conventional keyboard keys, buttons, touchpads, or any suitable input mechanism. The input system body may comprise a platform elevated over the keyboard, the platform adapted to support a mouse. Alternatively, the input system may comprise an input device that eliminates the need for a separate mouse. Such an input device may include one or more of a trackball, dials or wheels, buttons, digital tablet, touch screen, or any suitable mechanism for inputting information otherwise input by a mouse or other electrical input device. The input system may be integral with, or separate or separable from, the keyboard.

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1. An input system for use in combination with a keyboard having a key attached to the keyboard, the key generating a first electrical signal corresponding to the key when the key is activated by a user, the input system comprising:a body adapted to be positioned over the keyboard such that the body

1. An input system for use in combination with a keyboard having a key attached to the keyboard, the key generating a first electrical signal corresponding to the key when the key is activated by a user, the input system comprising:a body adapted to be positioned over the keyboard such that the body blocks the user's access to the key; anda first mechanism attached to the body, the first mechanism adapted to be accessible to the user when the body is positioned over the keyboard, the first mechanism adapted to generate the first electrical signal corresponding to the key without activating the key when the first mechanism is activated by the user. 2. The input system of claim 1, wherein the first mechanism comprises a key. 3. The input system of claim 1, wherein the first mechanism comprises a button. 4. The input system of claim 1, wherein the first mechanism comprises a touchpad. 5. The input system of claim 1, further comprising a platform for supporting a mouse above the keyboard, the platform positioned directly above the keyboard and the platform providing a surface on which to manipulate the mouse and placing the mouse in close proximity to the keyboard. 6. The input system of claim 5, further comprising a hand rest. 7. The input system of claim 1, further comprising a second mechanism that, when activated by the user, generates a second electrical signal, the second electrical signal corresponding to an electrical signal produced by a mouse when the mouse is moved relative to a surface adjacent the mouse. 8. The input system of claim 7, wherein the second mechanism comprises a trackball. 9. The input system of claim 7, wherein the second mechanism comprises a key. 10. The input system of claim 7, wherein the second mechanism comprises a button. 11. The input system of claim 7, wherein the second mechanism comprises a touchpad. 12. The input system of claim 1, further comprising a second mechanism that, when activated by the user, generates a second electrical signal, the second electrical signal corresponding to an electrical signal produced by a mouse button when the mouse button is activated by the user. 13. The input system of claim 12, wherein the second mechanism comprises a key. 14. The input system of claim 12, wherein the second mechanism comprises a button. 15. The input system of claim 12, wherein the second mechanism comprises a touch pad. 16. The input system of claim 1, further comprising a second mechanism that, when activated by the user, generates a second electrical signal, the second electrical signal corresponding to an electrical signal produced by a first rotatable member connected to a mouse when the first rotatable member is rotated by the user. 17. The input system of claim 16, wherein the second mechanism comprises a key. 18. The input system of claim 16, wherein the second mechanism comprises a button. 19. The input system of claim 16, wherein the second mechanism comprises a touchpad. 20. The input system of claim 16, wherein the second mechanism comprises a second rotatable member. 21. The input system of claim 20, wherein the second rotatable member comprises a wheel. 22. The input system of claim 20, wherein the second rotatable member comprises a dial. 23. The input system of claim 20, wherein the second rotatable member comprises a trackball. 24. An input system in combination with a keyboard comprising:a support surface;a keyboard comprising a first body defining a top surface and a first bottom surface contacting the support surface, a key attached to the keyboard, the key adapted to generate an electrical input signal when a user activates the key by depressing the key;an input system adjacent the keyboard, the input system comprising a second body defining a second bottom surface contacting the support surface, the second body extending upward from the support surface to a height, and further extending from the height over at least a portion of the top surface such that the second b ody extends over and in close proximity to the key, the input system further comprising an input mechanism, the input mechanism generating the electrical input signal without activating the key when the user activates the input mechanism. 25. An input system in combination with a keyboard comprising:a keyboard comprising a first body defining a top surface, a key attached to the keyboard, the key adapted to generate an electrical input signal when a user depresses the key;an input system comprising a second body attached with the keyboard, the second body extending upward from the keyboard to a height, and further extending from the height over at least a portion of the top surface such that the second body extends over and in close proximity to the key, the input system further comprising an input mechanism, the input mechanism generating the electrical input signal without activating the key when the user activates the input mechanism. 26. An input system for use in combination with a keyboard, comprising a key attached to a keyboard, the key generating an electrical signal corresponding to the key when a user activates the key, the input system positioned over the keyboard such that the input system blocks a user's access to the key, the input system comprising means for generating the electrical signal corresponding to the key without activating the key. 27. An input system in combination with a keyboard, comprising:a keyboard having a first body defining a top surface;a key protruding from the top surface of the keyboard, the key generating a first electrical signal corresponding to the key when a user activates the key by depressing the key;a second body positioned directly above the top surface of the keyboard and directly above the key;a first mechanism attached to the second body, the first mechanism generating the first electrical signal corresponding to the key without activating the key when the user activates the first mechanism. 28. The input system of claim 27, further comprising a second mechanism attached to the second body, the second mechanism generating a second electrical signal when the user activates the second mechanism.