According to an aspect, a character input device includes a display unit, an input detecting unit, and a control unit. A matrix of sensing circuits for a keyboard are placed under the sheet to detect when and where the sheet is depressed and provides an output to a keyboard controller indicating which portion of the keyboard has been contacted. A trimming area is set by using the facial frame. A wrapping element surrounds an outer periphery of the main body. Release is accomplished by a release tool, which is delivered on slick line or wire line. Maintaining the columns in a charged state prior to array operations reduces current surges and improves data read timing.