Electronic apparatus, control method of electronic apparatus, and control program of electronic apparatus

A method performed by a processor of an electronic apparatus, the method comprising:

• clearing a value stored in a key transfer memory storage area;
• causing an entered numeral input area of a memory to store a first numerical value transferred from an external device;
• after causing the entered numeral input area to store the first numerical value transferred from the external device, determining whether a display can display the first numerical value stored in the entered numeral input area;
• in response to determining that the display cannot display the first numerical value stored in the entered numeral input area, refraining from causing the key transfer memory storage area to store the first numerical value stored in the entered numeral input area;
• and
• in response to determining that the display can display the first numerical value stored in the entered numeral input area:
• causing the key transfer memory storage area of the memory to store the first numerical value;
• then causing an entered numeral storage area of the memory and the entered numeral input area to store the first numerical value stored in the key transfer memory storage area;
• then causing a second numerical value input through a key input device comprising a plurality of input keys to be stored in the entered numeral input area instead of the first numerical value, while the first numerical value continues to be stored in the entered numeral storage area and the key transfer memory storage area;
• in response to a first operator of a first type being input through the key input device after transfer of the first numerical value from the external device and prior to the input of the second numerical value input through the key input device, causing an operator information area to store the first operator;
• and
• in response to a second operator of a second type being input through the key input device after the second numerical value is stored in the entered numeral input area while the first numerical value continues to be stored in the entered numeral storage area and the key transfer memory storage area and after the first operator is stored in the operator information area,
• performing an arithmetic operation defined by the first operator of the first type on the first numerical value stored in the entered numeral storage area and the second numeral stored in the entered numeral input area;
• and
• then causing the entered numeral storage area to store a result of the arithmetic operation instead of the first numerical value and the entered numeral input area to store the result of the arithmetic operation instead of the second numerical value
• wherein the memory is further configured to secure therein an independent memory storage area,
• wherein the method further comprises:
• in response to an input through a memory storage key of the key input device, causing the independent memory storage area to store a numerical value obtained by processing the numerical value stored in the entered numeral input area;
• and
• in response to an input from a memory read key of the key input device, causing the entered numeral input area and the entered numeral storage area to store the numerical value stored in the independent memory storage area, and
• wherein processing to cause the entered numeral input area and the entered numeral storage area to store the value stored in the key transfer memory storage area and processing to cause the entered numeral input area and the entered numeral storage area to store the numerical value stored in the independent memory storage area are common processing.

A non-transitory computer-readable recording medium with an executable program stored thereon, wherein the program instructs a computer to:

• clear a value stored in a key transfer memory storage area;
• cause an entered numeral input area of a memory to store a first numerical value transferred from an external device;
• after causing the entered numeral input area to store the first numerical value transferred from the external device, determine whether a display can display the first numerical value stored in the entered numeral input area;
• in response to determining that the display cannot display the first numerical value stored in the entered numeral input area, refrain from causing the key transfer memory storage area to store the first numerical value stored in the entered numeral input area;
• and
• in response to determining that the display can display the first numerical value stored in the entered numeral input area:
• cause the key transfer memory storage area of the memory to store the first numerical value;
• then cause an entered numeral storage area of the memory and the entered numeral input area to store the first numerical value stored in the key transfer memory storage area;
• then cause a second numerical value input through a key input device comprising a plurality of input keys to be stored in the entered numeral input area instead of the first numerical value, while the first numerical value continues to be stored in the entered numeral storage area and the key transfer memory storage area;
• in response to a first operator of a first type being input through the key input device after transfer of the first numerical value from the external device and prior to the input of the second numerical value input through the key input device, cause an operator information area to store the first operator;
• and
• in response to a second operator of a second type being input through the key input device after the second numerical value is stored in the entered numeral input area while the first numerical value continues to be stored in the entered numeral storage area and the key transfer memory storage area and after the first operator is stored in the operator information area,
• perform an arithmetic operation defined by the first operator of the first type on the first numerical value stored in the entered numeral storage area and the second numeral stored in the entered numeral input area;
• and
• then cause the entered numeral storage area to store a result of the arithmetic operation instead of the first numerical value and the entered numeral input area to store the result of the arithmetic operation instead of the second numerical value,
• wherein the memory is further configured to secure therein an independent memory storage area,
• wherein the program further instructs the computer to:
• in response to an input through a memory storage key of the key input device, cause the independent memory storage area to store a numerical value obtained by processing the numerical value stored in the entered numeral input area;
• and
• in response to an input from a memory read key of the key input device, cause the entered numeral input area and the entered numeral storage area to store the numerical value stored in the independent memory storage area, and
• wherein processing to cause the entered numeral input area and the entered numeral storage area to store the value stored in the key transfer memory storage area and processing to cause the entered numeral input area and the entered numeral storage area to store the numerical value stored in the independent memory storage area are common processing.

An electronic apparatus comprising:

• a key input device comprising a plurality of input keys;
• a memory configured to secure therein, at least:
• a key transfer memory storage area;
• an entered numeral storage area;
• an entered numeral input area;
• and
• an operator information area;
• and
• a processor configured to:
• cause the entered numeral input area to store a first numerical value transferred from an external device;
• then cause the key transfer memory storage area to store the first numerical value;
• then cause the entered numeral storage area and the entered numeral input area to store the first numerical value stored in the key transfer memory storage area;
• then cause a second numerical value input through the key input device to be stored in the entered numeral input area instead of the first numerical value, while the first numerical value continues to be stored in the entered numeral storage area and the key transfer memory storage area;
• in response to a first operator of a first type being input through the key input device after transfer of the first numerical value from the external device and prior to the input of the second numerical value input through the key input device, cause the operator information area to store the first operator;
• and
• in response to a second operator of a second type being input through the key input device after the second numerical value is stored in the entered numeral input area while the first numerical value continues to be stored in the entered numeral storage area and the key transfer memory storage area and after the first operator is stored in the operator information area,
• perform an arithmetic operation defined by the first operator of the first type on the first numerical value stored in the entered numeral storage area and the second numeral stored in the entered numeral input area;
• and
• then cause the entered numeral storage area to store a result of the arithmetic operation instead of the first numerical value and the entered numeral input area to store the result of the arithmetic operation instead of the second numerical value,
• wherein the memory is further configured to secure therein an independent memory storage area,
• wherein the processor is further configured to:
• in response to an input through a memory storage key of the key input device, cause the independent memory storage area to store a numerical value obtained by processing the numerical value stored in the entered numeral input area;
• and
• in response to an input from a memory read key of the key input device, cause the entered numeral input area and the entered numeral storage area to store the numerical value stored in the independent memory storage area, and
• wherein processing to cause the entered numeral input area and the entered numeral storage area to store the value stored in the key transfer memory storage area and processing to cause the entered numeral input area and the entered numeral storage area to store the numerical value stored in the independent memory storage area are common processing,
• wherein the key input device comprises a first key for inputting an operator for use in an arithmetic operation, and a second key for triggering execution of the arithmetic operation using the operator, and
• wherein the processor is configured to:
• cause, in response to determining that the first numerical value is received from the external device before the operator is input through the first key, the entered numeral storage area to store the first numerical value before the operator is input;
• cause, in response to determining that the second numerical value is received from the external device after the operator is input through the first key, the entered numeral input area to store the second numerical value before the execution of the arithmetic operation is triggered through the second key;
• and
• perform, in response to determining that the execution of the arithmetic operation is triggered through the second key, the arithmetic operation using the operator input through the first key, the first numerical value stored in the entered numeral storage area, and the second numerical value stored in the entered numeral input area.