Abstract: Data input may be effected with a keyboard including a first keypad having five keys and a second keypad having five keys. The keys of the first keypad are correlated with columns of a 5×5 matrix including 25 cells, where each of the five keys of the first keypad is associated with one column. The keys of the second keypad are correlated with rows of the 5×5 matrix, where each of the five keys of the second keypad is associated with one row. Each combination consisting of one key from each of the first and second keypads is thereby associated with one of the 25 cells in the 5×5 matrix, and each cell of the 25 cells contains content. One key from each of the first and second keypads activated, and the content from one of the 25 cells is input based on the activated keys. This input is repeated until data entry is complete.

Abstract: There is provided an alphabetic character input apparatus including a data storage unit configured to store therein alphabetic character assignment information of each of keys in an alphabetic character input section and a program for inputting an alphabetic character; a key input unit configured to detect a key manipulation signal of a user to select an alphabetic character assigned to each of the keys; and a memory configured to store therein alphabetic character assignment information of a key corresponding to a key manipulation signal lately input by the user such that the alphabetic character assignment information of the key is assigned to a clone key.

Abstract: An information input apparatus which displays a plurality of buttons on a display unit, detects an indicated position by a positional coordinate detection unit arranged on the display unit and inputs information corresponding to an indicated button includes: an incorrect input judgment unit for judging whether or not input information which is input when a to-be-selected button selected from the plurality of buttons is indicated is incorrect input; a pattern selection unit which makes a user select one button arrangement pattern from a plurality of button arrangement patterns including the to-be-selected button at a predetermined position when the incorrect input judgment unit judges that the input information is incorrect input.

Abstract: A telegraphic keyer fitting over a finger, preferably the index finger, of an operator, is disclosed for tapping against the operator's thumb or any convenient object in practice or transmission of code with portable equipment. The keyer is useful when walking, sitting, standing, driving, or during other activities of the operator.

Abstract: A keyswitch for a keyboard which may generate either a first signal or a second signal is formed by a pair of saturable magnetic cores and corresponding drive and sense line wires that are molded into a unitary support assembly in a keyswitch housing. A plunger and a magnet assembly that is depressible relative to the housing and which supports at least one permanent magnet and a pair of compressible springs allows for the unsaturation of one core and the compression of one spring upon depression of the plunger to a first position and for the unsaturation of the second core by the compression of the second spring upon further depression of the plunger and magnet assembly to a character second position.

Abstract: A keyswitch for a keyboard is disclosed that has a support assembly which holds a saturable magnetic core and drive and sense line wires for the core. A plunger and magnet assembly that is depressible relative to the housing of the switch allows a permanent magnet to be moved away from the core when the plunger is depressed so the core can come out of magnetic saturation, thereby allowing signals from the drive line to be coupled to the sense line. The support assembly is formed of a two-piece construction that utilizes two identical molded plastic parts whereby the core and drive and sense line wires can be easily inserted into and removed from the support assembly.