JPS6146624U - key input circuit - Google Patents

key input circuit

Info

Publication number
JPS6146624U
JPS6146624U JP13215784U JP13215784U JPS6146624U JP S6146624 U JPS6146624 U JP S6146624U JP 13215784 U JP13215784 U JP 13215784U JP 13215784 U JP13215784 U JP 13215784U JP S6146624 U JPS6146624 U JP S6146624U
Authority
JP
Japan
Prior art keywords
input circuit
key input
voltage setting
analog multiplexer
key
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13215784U
Other languages
Japanese (ja)
Inventor
裕司 三木
真 三宅
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to JP13215784U priority Critical patent/JPS6146624U/en
Publication of JPS6146624U publication Critical patent/JPS6146624U/en
Pending legal-status Critical Current

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  • Input From Keyboards Or The Like (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本考案の一実施例の回路図である。 ，１１・・・梯子形電圧設定回路、２０・・・アナログ
マルチプレクサ、３０・・・Ａ／Ｄ変換器、Ｒ１，・・
・，Ｒｎ・・・抵抗器、Ｋ１，・・・ｔ Ｋｎ・・・キ
ースイッチ。The drawing is a circuit diagram of an embodiment of the present invention. , 11... Ladder type voltage setting circuit, 20... Analog multiplexer, 30... A/D converter, R1,...
・,Rn...Resistor, K1,...t Kn...Key switch.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 複数のキースイッチ及び複数の抵抗器による梯子形電圧
設定回路と、複数の前記梯子形電圧設定回路が接続され
たアナログマルチプレクサと、前記アナログマルチプレ
クサからの出力信号をＡ／Ｄ変換するＡ／Ｄ変換器とよ
りなるキー人力回路。A ladder voltage setting circuit including a plurality of key switches and a plurality of resistors, an analog multiplexer to which the plurality of ladder voltage setting circuits are connected, and an A/D conversion for A/D converting the output signal from the analog multiplexer. A key human power circuit consisting of a device.
JP13215784U 1984-08-29 1984-08-29 key input circuit Pending JPS6146624U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13215784U JPS6146624U (en) 1984-08-29 1984-08-29 key input circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13215784U JPS6146624U (en) 1984-08-29 1984-08-29 key input circuit

Publications (1)

Publication Number Publication Date
JPS6146624U true JPS6146624U (en) 1986-03-28

Family

ID=30690719

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13215784U Pending JPS6146624U (en) 1984-08-29 1984-08-29 key input circuit

Country Status (1)

Country Link
JP (1) JPS6146624U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01187622A (en) * 1988-01-22 1989-07-27 Toshiba Corp Key input device
JPH01142040U (en) * 1988-03-19 1989-09-28

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01187622A (en) * 1988-01-22 1989-07-27 Toshiba Corp Key input device
JPH01142040U (en) * 1988-03-19 1989-09-28

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