ApplicationNo. 05/559062 filed on 03/17/1975
US Classes:708/130, Programmable calculator902/21, With specific data output means or indicator902/26Including semiconductor chip (e.g., smart card)
ExaminersPrimary: Smith, Jerry
Attorney, Agent or Firm
International ClassG06F 15/02 (20060101)
AbstractAn operator prompting system for a calculator of the type having stored program control for performing a limited number of pre-programmed calculations, the prompting system being adapted to guide an operator through the different programs by directly indicating the need for a data entry and the nature of such entry. In a preferred embodiment, the calculator display is of the alpha-numeric variety, and means are provided for driving the display to directly indicate upon such display the nature of the data required. The program module within the calculator may be configured to carry out complex calculations in various specialized fields, such as navigational, financial, scientific or engineering, the alpha-numeric display being used to display the numerical data as entered and the results, and also to directly call for the data required for the different programs or uses.