Title:
【発明の名称】キーボード回路装置
Document Type and Number:
Japanese Patent JP2977145
Kind Code:
B2
Abstract:
A keyboard circuit apparatus is constituted such that resistive elements are provided both in a first sheet and a second sheet, an insulating spacer being laid on the first sheet, and the second sheet being laid on the insulating spacer. When a key switch is closed, one of the resistive elements provided on the first sheet and one of the resistive elements provided on the second sheet are electrically connected in series so that a desired value of resistance can be obtained.
Inventors:
SUGII TAKESHI
OOHASHI YOSHIAKI
OOHASHI YOSHIAKI
Application Number:
JP5913193A
Publication Date:
November 10, 1999
Filing Date:
March 18, 1993
Export Citation:
Assignee:
FUJITSU KK
International Classes:
H01H13/702; H01H13/76; H03M11/00; G06F3/023; H03M11/20; (IPC1-7): H01H13/76; G06F3/023; H03M11/20
Domestic Patent References:
| JP2228721A | ||||
| JP63247820A | ||||
| JP5958849U |
Attorney, Agent or Firm:
Tadahiko Ito