In a postage meter having structures for entering data, for displaying numerical values and other data, and for printing postage, and having a computer electrically connected to each of the aforesaid structures and programmed for processing data for controlling their operation, wherein the data entering structure includes a keyboard having a plurality of depressable numeric keys, and wherein the computer means includes means for storing data and calculating amounts pertaining to the operation of said postage meter; there is provided apparatus and a method of displaying data pertaining to the operation of the postage meter. The method includes the steps of providing the keyboard with a depressable special purpose key, depressing selected numeric keys for causing the display of a predetermined numerical value, depressing the special purpose key when said numerical value on display, and programming the computer for causing the displaying structure to display data pertaining to the operation of the postage meter in response to the depression of the special purpose key. Preferably, the step of causing the display of a predetermined value includes the step of utilizing a predetermined value which includes at least one numeral and does not include a decimal.