Abstract: A calculator includes a display, and a processor, wherein the processor is configured to perform processes including: receiving a selection operation of a calculation function type; receiving an input operation of calculation object data according to the selected calculation function type; displaying calculation result data obtained by a calculation based on the input calculation object data on the display; converting at least one of the calculation object data and the calculation result data into a two-dimensional code according to (i) the selected calculation function type and (ii) both of an input state of the calculation object data and a display state of the calculation result data during an output operation for outputting external data; and outputting, as the external data, an image of the two-dimensional code on the display.

Abstract: A calculator includes an input unit and a processor. The processor is configured to perform following processes: receiving a selection of a calculation function type according to a user's operation; receiving an input of calculation object data according to the selected calculation function type, according to a user's operation; and outputting at least one of the calculation object data and calculation result data obtained by a calculation based on the input calculation object data, as external data.

Abstract: A calculator includes a display, and a processor, wherein the processor is configured to perform processes including: receiving a selection operation of a calculation function type; receiving an input operation of calculation object data according to the selected calculation function type; displaying calculation result data obtained by a calculation based on the input calculation object data on the display; converting at least one of the calculation object data and the calculation result data into a two-dimensional code according to (i) the selected calculation function type and (ii) both of an input state of the calculation object data and a display state of the calculation result data during an output operation for outputting external data; and outputting, as the external data, an image of the two-dimensional code on the display.

Abstract: According to an embodiment, an electronic device includes a processor. The processor is configured to perform: formula input process of inputting a plurality of pieces of formula data in association with respective formula numbers through a user operation; a formula setting process of setting formula data in the pieces of formula data input by the formula input process as an output target by the user operation; cited formula extraction process of extracting another formula data in the pieces of formula data when the formula data set by the formula setting process cites a formula number of the another formula data; and a data output process of outputting the set formula data with the extracted another formula data.

Abstract: A table generating apparatus includes a display unit and a processor which performs the following processes of: receiving an input of a function expression; receiving an input for setting a table range; generating a table representing a relation between a plurality of values in the range and their corresponding values determined by the function expression based on the table range, displaying the generated table on the display unit; receiving an input of an additional value while the table is displayed; adding the received additional value and its corresponding value determined by the function expression to the displayed table; and expanding the table by adding values obtained by subsequently changing the additional value and their corresponding values determined by the function expression to the displayed table, after the table addition function adds the additional value and its corresponding value to the table, each time an operation input is received.

Abstract: An expression processing device of the present invention includes an input unit, a display and a processor. The processor is configured to perform following processes: inputting an expression in response to a user's operation on the input unit; detecting a plurality of variables included in the expression input by the input unit, among the plurality of variables which are usable in expressions; and outputting the input expression and variable values associated with the detected variables.

Abstract: According to an embodiment, an electronic device includes a processor. The processor is configured to perform: formula input process of inputting a plurality of pieces of formula data in association with respective formula numbers through a user operation; a formula setting process of setting formula data in the pieces of formula data input by the formula input process as an output target by the user operation; cited formula extraction process of extracting another formula data in the pieces of formula data when the formula data set by the formula setting process cites a formula number of the another formula data; and a data output process of outputting the set formula data with the extracted another formula data.

Abstract: An electronic device includes: a display unit which displays data and a two-dimensional code; and a processor. The processor performs: an encoding process of encoding the data displayed on the display unit into the two-dimensional code; a two-dimensional code displaying process of performing a first masking operation to the two-dimensional code with a first mask pattern and displaying the code having been subjected to the first masking operation on the display unit; and a two-dimensional code changing process of performing a second masking operation to the two-dimensional code with a second mask pattern, and displaying the code having been subjected to the second masking operation instead of the code having been subjected to the first masking operation on the display unit, when a user operation is executed while the two-dimensional code having been subjected to the first masking operation is displayed on the display unit.

Abstract: An electronic device includes: a display unit which displays data and a two-dimensional code; and a processor. The processor performs: an encoding process of encoding the data displayed on the display unit into the two-dimensional code; a two-dimensional code displaying process of performing a first masking operation to the two-dimensional code with a first mask pattern and displaying the code having been subjected to the first masking operation on the display unit; and a two-dimensional code changing process of performing a second masking operation to the two-dimensional code with a second mask pattern, and displaying the code having been subjected to the second masking operation instead of the code having been subjected to the first masking operation on the display unit, when a user operation is executed while the two-dimensional code having been subjected to the first masking operation is displayed on the display unit.

Abstract: An electronic device including: a display unit which displays a code generated based on tabular data; and a processor, wherein the processor performs: a compressing process of compressing numerical data having a plurality of digits and contained in the tabular data by reducing the number of digits of the numerical data; an encoding process of encoding the tabular data containing the numerical data compressed through the compressing process; and a code displaying process of displaying a code obtained by the encoding process on the display unit.

Abstract: A mathematical expression input apparatus includes a mathematical expression display unit configured to display a mathematical expression, a mathematical expression portion designation unit configured to designate a mathematical expression portion displayed by the mathematical expression display unit in accordance with user operation, and an output unit configured to determine a designation method for a mathematical expression portion designated by the mathematical expression designation unit, modify the mathematical expression in accordance with the designation method, and display the modified mathematical expression.

Abstract: According to an embodiment, an electronic device includes a processor. The processor is configured to perform: formula input process of inputting a plurality of pieces of formula data in association with respective formula numbers through a user operation; a formula setting process of setting formula data in the pieces of formula data input by the formula input process as an output target by the user operation; cited formula extraction process of extracting another formula data in the pieces of formula data when the formula data set by the formula setting process cites a formula number of the another formula data; and a data output process of outputting the set formula data with the extracted another formula data.

Abstract: A calculator includes an input unit and a processor. The processor is configured to perform following processes: receiving a selection of a calculation function type according to a user's operation; receiving an input of calculation object data according to the selected calculation function type, according to a user's operation; and outputting at least one of the calculation object data and calculation result data obtained by a calculation based on the input calculation object data, as external data.

Abstract: An expression processing device of the present invention includes an input unit, a display and a processor. The processor is configured to perform following processes: inputting an expression in response to a user's operation on the input unit; detecting a plurality of variables included in the expression input by the input unit, among the plurality of variables which are usable in expressions; and outputting the input expression and variable values associated with the detected variables.

Abstract: A table generating apparatus includes a display unit and a processor which performs the following processes of: receiving an input of a function expression; receiving an input for setting a table range; generating a table representing a relation between a plurality of values in the range and their corresponding values determined by the function expression based on the table range, displaying the generated table on the display unit; receiving an input of an additional value while the table is displayed; adding the received additional value and its corresponding value determined by the function expression to the displayed table; and expanding the table by adding values obtained by subsequently changing the additional value and their corresponding values determined by the function expression to the displayed table, after the table addition function adds the additional value and its corresponding value to the table, each time an operation input is received.

Abstract: A mathematical expression input apparatus includes a mathematical expression display unit configured to display a mathematical expression, a mathematical expression portion designation unit configured to designate a mathematical expression portion displayed by the mathematical expression display unit in accordance with user operation, and an output unit configured to determine a designation method for a mathematical expression portion designated by the mathematical expression designation unit, modify the mathematical expression in accordance with the designation method, and display the modified mathematical expression.