Eingabesystem für eine tragbare Datenverarbeitungsanlage.

摘要

In a data processing device of the handy type having a CPU arranged to include a calculating mode for performing calculation and a memorandum pad mode for storing data and for reading the stored data in response to the operation of a reading key, the CPU can be changed to the memorandum pad mode by a operation of a reading key so that reading of the data of the memorandum is started with easy operation.