some lines about " leg operated mouse for upper limb challenged people" who tell fast and correct answer I will mark the I'd as brainlist
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keyboard and mouse set for lb disabled people
keyboard and mouse set for lb disabled people.
A keyboard and mouse package special for people with physical disability of upper limbs is equipped with a foot operating mechanism, a keyboard locating indicator disc and a driving procedure, the foot operating mechanism is operated by feet, when the mouse is in operating state, the movement of the mouse is controlled by moving a key-press to move down, left and right, when the keyboard is in operating state, a key needed to be clicked is chosen by up, down, left and right moving the key-press and confirming the key-press left and right, a computer emits an instruction signal sent by the foot operating mechanism through a serial port to a control chip which controls the keyboard locating indicator disc to be treated, and the control chip controls the illumining and the extinguishing of a corresponding light-emitting instruction diode to instruct the current state of the key-press. The key-press has large volume, which is convenient for the operation by feet, and the keyboard locating indicator disc is utilized for real-time display, thereby realizing using a large key-press to operate a small keyboard with practicability, and overcoming the shortage that in the operating system, a simulative keyboard can not utilize combination keys and covers the display space.