A push button-equipped touch panel includes a touch panel, a cover panel and a push button part. The cover panel is disposed on an operation surface side of the touch panel and has a through hole. The push button part is disposed in the through hole of the cover panel.

The character input keyboard. One shift key and one space key are placed on the home position of the left and right thumb, and one control key is placed between them. These keys have the width from 1 to 1.5 times of the character key.

The character input keyboard. One shift key and one space key are placed on the home position of the left and right thumb, and one control key is placed between them. These keys have the width from 1 to 1.5 times of the character key.

The present subject matter relates to recognition of simultaneous key presses in a keyboard. The keyboard includes a first group of keys, which includes keys that are to be individually recognized when pressed simultaneously with at least one other key of the first group. Keys of a first sub-group of the first group are connected to key switches that are to be connected to general purpose input/output (GPIO) pins. Keys of a second sub-group of the first group are connected to key switches on at least one of mutually different columns and mutually different rows of a matrix of electrical interconnections. The second sub-group includes at least one key that is not a modifier key.

The present subject matter relates to recognition of simultaneous key presses in a keyboard. The keyboard includes a first group of keys, which includes keys that are to be individually recognized when pressed simultaneously with at least one other key of the first group. Keys of a first sub-group of the first group are connected to key switches that are to be connected to general purpose input/output (GPIO) pins. Keys of a second sub-group of the first group are connected to key switches on at least one of mutually different columns and mutually different rows of a matrix of electrical interconnections. The second sub-group includes at least one key that is not a modifier key.

The present subject matter relates to recognition of simultaneous key presses in a keyboard. The keyboard includes a first group of keys, which includes keys that are to be individually recognized when pressed simultaneously with at least one other key of the first group. Keys of a first sub-group of the first group are connected to key switches that are to be connected to general purpose input/output (GPIO) pins. Keys of a second sub-group of the first group are connected to key switches on at least one of mutually different columns and mutually different rows of a matrix of electrical interconnections. The second sub-group includes at least one key that is not a modifier key.

The present subject matter relates to recognition of simultaneous key presses in a keyboard. The keyboard includes a first group of keys, which includes keys that are to be individually recognized when pressed simultaneously with at least one other key of the first group. Keys of a first sub-group of the first group are connected to key switches that are to be connected to general purpose input/output (GPIO) pins. Keys of a second sub-group of the first group are connected to key switches on at least one of mutually different columns and mutually different rows of a matrix of electrical interconnections. The second sub-group includes at least one key that is not a modifier key.

An input device of the present disclosure includes an electrode sheet, a plurality of keys, and a controller. The electrode sheet directly senses a change in capacitance at a position where an object approaches when the object approaches the electrode sheet. The plurality of keys are depressibly disposed on the electrode sheet. The controller detects capacitance change amounts at a plurality of positions on the electrode sheet, outputs positional information indicating the position, among the plurality of positions, at which a capacitance change amount detected satisfies a first given condition, and outputs key information indicating a key among the plurality of keys corresponding to the position, among the plurality of positions, at which a capacitance change amount detected satisfies a second given condition.

An input device of the present disclosure includes an electrode sheet, a plurality of keys, and a controller. The electrode sheet directly senses a change in capacitance at a position where an object approaches when the object approaches the electrode sheet. The plurality of keys are depressibly disposed on the electrode sheet. The controller detects capacitance change amounts at a plurality of positions on the electrode sheet, outputs positional information indicating the position, among the plurality of positions, at which a capacitance change amount detected satisfies a first given condition, and outputs key information indicating a key among the plurality of keys corresponding to the position, among the plurality of positions, at which a capacitance change amount detected satisfies a second given condition.

In an electronic information processing system, a brain activity detection unit detects an activity of a user's brain. A change determination part determines whether a character input mode presently set needs to be changed to a different character input mode based on a detection result of the brain activity detection unit after a character input under the character input mode presently set is displayed on a display unit. When the change determination part determines that the character input mode presently set needs to be changed to the different character input mode, the character input mode setting part sets the different character input mode instead of the character input mode presently set.