Human-computer Interface Devices, namely joysticks; computer software for interfacing between the human-computer interface devices and a computer, and for using the human-computer interface devices to control data within the computer environment in the field of Human-computer Interaction; clocks; keypads, namely, numeric electronic keypads; reverse keypads, namely keypads having keyswitches arranged in an array facing away from the keypad operator; computer controllers; computer monitors and screens; keypad-isomorphic symbols, namely symbols representing patterns which may be inputted into a computer with a keypad; keypad matricies, namely an array of keyswitches that make up a keypad; and electric pushbutton switches