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Title:
【発明の名称】電子機器
Document Type and Number:
Japanese Patent JP2509668
Kind Code:
B2
Abstract:
A portable electronic calculator includes a liquid crystal display unit (11) for performing display operations in accordance with display signals, a key input unit (12) for entering various data, and an LSI (13), including a plurality of display signal output terminals, for performing key input wait processing for a key input from the key input unit (12), key input processing for determining a key when a key input is performed through the key input unit (12), operation processing for performing an operation corresponding to the determined key and generating display data in accordance with the operation result, and key presence/absence processing for detecting the presence/absence of a key input from the key input unit (12) upon completion of the operation processing, and for intermittently driving the display signal output terminals in accordance with the display data during execution of the key input wait processing and the key presence/absence processing so as to cause the terminals to output pulse-like signals.

Inventors:
YANO YASUHIRO
ASHIDA KEISUKE
Application Number:
JP7872888A
Publication Date:
June 26, 1996
Filing Date:
March 31, 1988
Export Citation:
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Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
G06F15/02; G06F3/023; G06F3/048; H03M11/20; (IPC1-7): G06F15/02; G06F3/023; H03M11/20
Domestic Patent References:
JP6242313B2
Attorney, Agent or Firm:
Takehiko Suzue (2 outside)