Title:
【発明の名称】情報処理装置及び情報処理方法
Document Type and Number:
Japanese Patent JP3174045
Kind Code:
B2
Abstract:
A calculating apparatus having numeral keys, operation keys, a decimal point key and an input information display portion. In this calculating apparatus, when a series of numerical values are input by the respective keys, the decimal point key is controlled so that the decimal point key is in a selection disabled condition after the decimal point key is depressed once. Therefore, the user can know the inoperable condition of the decimal point key and can be protected from mis-operating the keys.
Inventors:
Satoshi Hirayama
Application Number:
JP8170390A
Publication Date:
June 11, 2001
Filing Date:
March 29, 1990
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G06F15/02; G06F3/02; G06F3/03; G06F3/041; G06F3/048; G06F3/0488; (IPC1-7): G06F3/02; G06F15/02
Domestic Patent References:
| JP60167024A | ||||
| JP63196928A |
Attorney, Agent or Firm:
Hidemori Matsukuma