1. A data programming method comprising: (A) determining whether data exceeds one page; (B) if the data exceeds one page, programming a first portion of the data into a non-volatile memory and storing a second portion of the data, which is insufficient for one page, into a volatile memory; (C) if the data does not exceed one page, storing the data insufficient for one page into the volatile memory; (D) determining whether a next data is programmed into the same page as the data; (E) if the next data is programmed into the same page as the data, performing the step (A); and (F) if the next data is not programmed into the same page as the data, programming the second portion of data into the non-volatile memory and performing the step (A).