Calculator loop decimal display control method and calculator

The invention relates to a calculator loop decimal display control method, which comprises the following steps of when a calculation result obtained by a calculator based on an input calculation formula is a loop decimal, marking loop nodes in the loop decimal so as to form a data packet, calculating the display capacity N required for displaying the data packet according to the set standard word size, calculating the single-row display capacity H of the display screen based on the standard word size, when N is less than or equal to H, directly displaying the data packet on a display screen in a single line, and when N is greater than H, controlling to completely display the data packet on a display screen of the calculator through automatic line feed and/or word size reduction. The calculator loop decimal display control method is more convenient for a user to visually check and read a calculation result. The invention further relates to the calculator applying the calculator loop decimal display control met