Abstract: A programmable logic controller having a data holding unit for storing operation data for instructing operations and condition data for the operations in accordance with a predetermined sequence, having a variable control unit for generating operation instruction signals from the operation data in accordance with a predetermined sequence, and controlling a system for successive operation when conditions defined by the condition data and conditions input from sensors of the control system match.

Abstract: An input/display apparatus for handwritten characters is capable of quickly inputting handwritten characters, freely editing characters inputted, and storing a lot of handwritten characters with a limited storing capacity. On a display panel provided with a display surface, the orthogonal coordinates of which are preset, a touch panel provided. An input surface of the touch panel, the orthogonal coordinates of which are preset, is disposed in such a way that the display surface and the input surface overlap each other. When the input surface is indicated with an input pen, the indicated coordinate point is outputted. At the time of handwriting input, when the input surface in the input/display area for characters is continuously indicated, coordinate points on the display surface corresponding to the plurality of indicated coordinate points are displayed.

Abstract: In a portable terminal device of the invention, when a menu key provided on a keyboard is depressed by an operator, a copy/move menu is displayed on a display area under the control of a CPU which detects this depression. Then, the CPU determines which is specified as data to be copied or moved, a set of data displayed on the display area or part of the set of data. The specified data is input to a transfer buffer, and a copy or move process is executed. In a case where an insert process is selected for inserting the data stored in The transfer buffer into another display position, the transfer data is transferred to an input buffer, so as to copy or move the transfer data to the other position.