Electronic device and calculation control method thereof

An electronic device comprising:

• a storage unit, configured for storing a plurality of arithmetic equation models, each arithmetic equation model defining the following elements:
• a first numerical position, a second numerical position, an arithmetic symbol, an arithmetic command symbol, and a mapping positional relationship between the first numerical position, the second numerical position, the arithmetic symbol, and the arithmetic command symbol;
• a touch screen, configured for sensing handwritten touch input of a user and generating signals associated with the user's handwritten touch input;
• a processor, comprising:
• a written content display module, configured for controlling displaying handwritten content according to the generated signals;
• an identification and determination module, configured for recognizing the handwritten content of the user, and converting the recognized handwritten content into an arithmetic operation if the recognized handwritten content matches one of the arithmetic equation models stored in the storage unit;
• a calculation module, configured for calculating a result of the arithmetic operation, if the recognized handwritten content matches one of the arithmetic equation models;
• and
• a display unit, configured for displaying the calculated result.