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A microwave oven and a method of controlling the same. The microwave oven includes a control unit having an internal storage unit to store cooking data and/or operational data to perform one or more existing cooking modes. An external storage unit is arranged independently from the control unit and

A microwave oven and a method of controlling the same. The microwave oven includes a control unit having an internal storage unit to store cooking data and/or operational data to perform one or more existing cooking modes. An external storage unit is arranged independently from the control unit and is electrically connected to the control unit to communicate with the control unit, and stores cooking data and/or the operational data to perform one or more new cooking modes.

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What is claimed is: 1. A microwave oven, comprising: a control unit having an internal storage unit to store cooking data and/or operational data required to perform one or more existing cooking modes; and an external storage unit arranged independently from the control unit and electrically connec

What is claimed is: 1. A microwave oven, comprising: a control unit having an internal storage unit to store cooking data and/or operational data required to perform one or more existing cooking modes; and an external storage unit arranged independently from the control unit and electrically connected to the control unit to communicate with the control unit, the external storage unit storing cooking data and/or operational data required to perform one or more new cooking modes, wherein the external storage unit has a data storage configuration, the data storage configuration comprising: a first storage field to store application status information of the external storage unit; a second storage field to store the cooking data of the one or more existing cooking modes; a third storage field to store the cooking data of the one or more new cooking modes and; a fourth storage field to store operational data of the one or more new cooking modes. 2. The microwave oven according to claim 1, further comprising: a magnetron to generate microwaves to heat food, wherein said cooking data comprises: cooking times and output values of the magnetron according to a type and an amount of the food. 3. The microwave oven according to claim 1, further comprising: a display unit to display cooking information required to cook food and/or cooking status information generated when the food is cooked, wherein the operational data comprise: the cooking information and/or the cooking status information. 4. The microwave oven according to claim 1, wherein said external storage unit comprises: a non-volatile memory device supporting rewriting of data. 5. The microwave oven according to claim 1, wherein said external storage unit comprises: an Electrically Erasable Programmable Read Only Memory (EEPROM). 6. A microwave oven, comprising: a control unit having an internal storage unit therein to store data required for one or more existing cooking modes; and an external storage unit, separate from the control unit, communicating with and controlled by the control unit, the external storage unit storing at least operational data required for one or more new cooking modes, wherein the external storage unit includes a data configuration, comprising: a first field to store status information of the external storage unit; a second field to store cooking data of the one or more existing cooking modes; a third field to store cooking data of the one or more new cooking modes; and a fourth field to store operational data of the one or more new cooking modes. 7. The microwave oven according to claim 6, wherein: the data stored in the internal storage unit comprises: predetermined cooking and operational data of the one or more existing cooking modes; and the data stored in the external storage unit comprises: cooking data and the operational data in accordance with the one or more new cooking modes and other cooking data of the one or more existing modes which are not stored, in advance, in the internal storage unit. 8. The microwave oven according to claim 7, further comprising: a display unit, wherein the operational data of the new and existing cooking modes comprises: help messages to be displayed on the display unit. 9. The microwave oven according to claim 8, wherein the operational data of the new and existing cooking modes further comprises: control algorithms based on the new and existing cooking modes. 10. The microwave oven according to claim 6, further comprising: a magnetron to generate microwaves to heat food, wherein the data required for the existing and new cooking modes comprises: cooking times and output values of the magnetron according to a type and an amount of the food. 11. The microwave oven according to claim 6, further comprising: a display unit to display cooking information required to cook food and/or cooking status information generated when the food is cooked, wherein the data required for existing and new cooking modes stored in the internal and external storage units, respectively, comprises: the cooking information and/or the cooking status information. 12. The microwave oven according to claim 6, wherein the external storage unit comprises: a non-volatile memory device supporting rewriting of data. 13. The microwave oven according to claim 6, wherein said external storage unit comprises: an Electrically Erasable Programmable Read Only Memory (EEPROM). 14. A microwave oven, comprising: a control unit having an internal storage unit to store data required to perform one or more existing cooking modes; and an external storage unit separate from the control unit communicating with the control unit, the external storage unit storing required data in a data configuration comprising; a first field to store application state information of the external storage unit, a second field to store data of the one or more existing cooking modes, a third field to store cooking data of the one or more new cooking modes, and a fourth field to store operational data of the one or more new cooking modes. 15. A microwave oven, comprising: a controller having an internal storage unit to transmit stored predefined data therefrom; and an external storage unit separate from the controller communicating with the controller, the external storage unit storing at least additional operational data and transmitting the stored additional data when accessed by the controller such that the internal storage unit of the controller and the external storage unit work as one unit in which the predefined data is stored in the internal storage unit and the at least additional operational data is stored in the external storage unit, and the at least additional operational data is stored after the predefined data in the internal storage unit is stored, wherein the external storage unit includes a data configuration, comprising: a first field to store status information of the external storage unit; a second field to store cooking data of the one or more existing cooking modes; a third field to store cooking data of the one or more new cooking modes; and a fourth field to store operational data of the one or more new cooking modes.