17. In an apparatus for displaying numerical value information, comprising: means for receiving in a coded fashion, a signal representative of multi-digit numerical value information, each digit being represented by one of a set of numerals, converting means for converting said coded multi-digit numerical value information signal into a kind of character signal for representing said coded multi-digit numerical value information in a given character form of numeral characters 0, 1, 2, 3, . . . 9, and display means responsive to said kind of character signals for displaying said multi-digit numerical value information by said given kind of character form of numeral characters, 0, 1, 2, 3, . . . 9, wherein said display means comprises multi-digit display positions and each digit numeral is displayed in each corresponding digit display position, the improvement comprising at least one further display means for displaying said numerical value information selectively in a form distinct from said given kind of character form, and wherein said converting means is adapted to convert said multi-digit numerical value information signal into a plurality of different kinds of character signals for representing said coded multi-digit numerical value information in a corresponding plurality of different kinds of character forms of numeral characters 0, 1, 2, 3, . . . 9, and wherein said display means and said at least one further display means are adapted to be responsive, respectively, to said different kinds of character signals to display said multi-digit numerical value information respectively by corresponding said different kinds of character forms of numeral characters 0, 1, 2, 3, . . . 9, which are different in character forms.
22. In an apparatus in accordance with claim 17, which further comprises means for selecting said display means and said at least one further display means for allowing display operation in said display means and said at least one further display means in the corresponding different kinds of character forms of numeral characters 0, 1, 2, 3, . . . 9.