1. A method for generating schematic diagrams, executed by a processing unit of an apparatus, comprising: generating, by the processing unit of the apparatus, a pin-editing interface comprising a data table to assist a user to configure pin settings, wherein the data table comprises a pin name column, a recommended net name column and a confirmation column, and the pin-editing interface comprises a first button and a second button; and directing, by the processing unit of the apparatus, a display unit to duplicate data of the pin name column into cells of the confirmation column when detecting that the first button is pressed; directing, by the processing unit of the apparatus, the display unit to duplicate data of the recommended net name column into cells of the confirmation column when detecting that the second button is pressed; obtaining, by the processing unit of the apparatus, a user setting via the pin-editing interface; and generating, by the processing unit of the apparatus, a schematic diagram on the display unit according to the user setting, wherein the schematic diagram comprises a component, and the component comprises a net name, a net symbol, an in-page I/O symbol and a cross-page I/O symbol associated with a pin.