Abstract: A data input system useful in a data base such as an address data management system. This data input system can reduce the number of key operation and the possibility of erroneously inputting data. This system comprises: a display for displaying input data; a first memory for storing data displayed on the display, a second memory for temporarily storing the displayed data; and a control unit for displaying the data stored in the second memory.

Abstract: A word processor for setting print out format for each line of a document to be printed by a decorative character printer. The word processor can format data by using various format data bits. The decorative character printer uses decorative character font-identifying bits. The word processor has a device for selecting either a format data input mode or a word data input mode. The format data or word data can be input and stored in the word processor. It will then be determined whether the format data includes decorative character-related data at the head or tail of a line of word data. Decorative characters can then be developed if such data is present in a line of word data.