JPH02138926U - - Google Patents

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Publication number
JPH02138926U
JPH02138926U JP4764789U JP4764789U JPH02138926U JP H02138926 U JPH02138926 U JP H02138926U JP 4764789 U JP4764789 U JP 4764789U JP 4764789 U JP4764789 U JP 4764789U JP H02138926 U JPH02138926 U JP H02138926U
Authority
JP
Japan
Prior art keywords
input signal
reading device
switching element
signal reading
power supply
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
JP4764789U
Other languages
English (en)
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 filed Critical
Priority to JP4764789U priority Critical patent/JPH02138926U/ja
Publication of JPH02138926U publication Critical patent/JPH02138926U/ja
Pending legal-status Critical Current

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Description

【図面の簡単な説明】
第1図は、本考案入力信号読取装置の一例を示
す回路の構成図、第2図は従来の入力信号読取装
置における回路の構成図である。 1……CPU、PC〜PC,PC……フ
オトカプラ、VCC,VCC……電源、R
〜R10……電流制限抵抗、SW〜SW……
外部接続信号発生手段、LE〜LE……LE
D(発光ダイオード)。

Claims (1)

  1. 【実用新案登録請求の範囲】 複数の外部接続信号のオン・オフを電流制限抵
    抗を介して接続された個々のスイツチング素子に
    より所定のタイミングで定期的に検出し、読取り
    が行われる入力信号読取装置において、 前記読取りを行うときにのみ前記個々のスイツ
    チング素子を付勢可能状態とする手段を該スイツ
    チング素子への電源供給線に関連して設けたこと
    を特徴とする入力信号読取装置。
JP4764789U 1989-04-25 1989-04-25 Pending JPH02138926U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4764789U JPH02138926U (ja) 1989-04-25 1989-04-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4764789U JPH02138926U (ja) 1989-04-25 1989-04-25

Publications (1)

Publication Number Publication Date
JPH02138926U true JPH02138926U (ja) 1990-11-20

Family

ID=31563761

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4764789U Pending JPH02138926U (ja) 1989-04-25 1989-04-25

Country Status (1)

Country Link
JP (1) JPH02138926U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009211461A (ja) * 2008-03-05 2009-09-17 Brother Ind Ltd 数値制御装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009211461A (ja) * 2008-03-05 2009-09-17 Brother Ind Ltd 数値制御装置

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