| 摘要 |
PURPOSE:To check an input data as to any general data, by checking an input data based on a key check data whenever a general data is inputted, in accordance with a general service program. CONSTITUTION:A central processing equipment CPU decides whether an input data from a keyboard KB is a numeral or not, and saves it in an A-register of a subtraction counter in case of a numeral. Unless it is a numeral, the CPU decides whether it is a service end key input or not. Unless it is a service end key input, the CPU sets a function key code to a latching B-register by which an output of a ten key in the keyboard KB is made an input, and executes a necessary processing. When all data inputs are finished and the service is finished by operating a service end key, a discrimination code data, a commodity code and a quantity data, which have been inputted are stored in a data memory DM in accordance with a prescribed format, and are transferred to a center transmission master machine MS of the CPU. Also, they are information-displayed on an indicator DP, as well. |
