Title:
PROGRAM TYPE ELECTRONIC CALCULATOR
Document Type and Number:
Japanese Patent JPS59127162
Kind Code:
A
Abstract:
PURPOSE:To prevent the erroneous designation of a read-in update mode by disabling to shift to read-in update mode not through a preliminary mode for read-in update mode. CONSTITUTION:The numerical information, arithmetic instruction, mode change instruction, program replacement instruction, program execution instruction, etc. are supplied to an arithmetic circuit 11 from a keyboard 3 and then processed in accordance with fixed instruction which is previously stored in a fixed memory 12. The various processed data are stored in a data memory 13. In a program run mode the key operations are converted into code data corresponding to each key through the circuit 11. These code data are stored in a program memory 14, and the program data stored in the memory 14 are held there until the program run mode is updated.
Inventors:
ISHIWATA JIYUNICHI
Application Number:
JP172883A
Publication Date:
July 21, 1984
Filing Date:
January 11, 1983
Export Citation:
Assignee:
CANON KK
International Classes:
G06F15/04; G06F15/02; (IPC1-7): G06F15/02
Attorney, Agent or Firm:
Yoshikazu Tani