JPH01142040U - - Google Patents

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Publication number
JPH01142040U
JPH01142040U JP3692788U JP3692788U JPH01142040U JP H01142040 U JPH01142040 U JP H01142040U JP 3692788 U JP3692788 U JP 3692788U JP 3692788 U JP3692788 U JP 3692788U JP H01142040 U JPH01142040 U JP H01142040U
Authority
JP
Japan
Prior art keywords
circuit
selection signal
load
input
terminal
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.)
Granted
Application number
JP3692788U
Other languages
Japanese (ja)
Other versions
JPH0615311Y2 (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 JP1988036927U priority Critical patent/JPH0615311Y2/en
Publication of JPH01142040U publication Critical patent/JPH01142040U/ja
Application granted granted Critical
Publication of JPH0615311Y2 publication Critical patent/JPH0615311Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Input From Keyboards Or The Like (AREA)

Description

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

第１図は本実施例の入力装置の回路図、第２図
は本実施例の入力装置に使用する操作パネルの回
路図、第３図、第４図は上記操作パネル内のシフ
トレジスタの具体的回路図、第５図は本実施例の
入力装置の動作を説明するタイムチヤートである
。 １……操作パネル、２……ＣＰＵ、３……リセ
ツト信号発生回路、４……キースイツチ部、５…
…ＬＥＤ表示部、６ａ，６ｂ……７セグメント表
示部、７，８……シフトレジスタ、７ａ，８ａ…
…Ｓｉ―ｐレジスタ、７ｂ，８ｂ……ラツチ回路
。 Fig. 1 is a circuit diagram of the input device of this embodiment, Fig. 2 is a circuit diagram of an operation panel used in the input device of this embodiment, and Figs. 3 and 4 are specifics of the shift register in the operation panel. FIG. 5 is a time chart explaining the operation of the input device of this embodiment. DESCRIPTION OF SYMBOLS 1...Operation panel, 2...CPU, 3...Reset signal generation circuit, 4...Key switch section, 5...
...LED display section, 6a, 6b...7 segment display section, 7, 8...Shift register, 7a, 8a...
...Si-p register, 7b, 8b...Latch circuit.

Claims (1)

【実用新案登録請求の範囲】 複数の負荷回路を所定期間選択する第１の選択
信号と、前記負荷回路の中で特定負荷回路内の各
負荷素子を選択する第２の選択信号とを発生する
時分割駆動表示制御回路を備えた電子機器におい
て、 複数の入力スイツチと、該複数の入力スイツチ
の一方の端子を共通接続した共通接続端に前記第
１の選択信号を印加する第１の回路と、前記複数
の入力スイツチの他方の端子に前記負荷素子の選
択信号を印加する第２の回路と、前記共通接続端
の電位を判定することにより前記入力スイツチの
状態を判断する判定回路とを備えたことを特徴と
する入力装置。[Claims for Utility Model Registration] A first selection signal for selecting a plurality of load circuits for a predetermined period and a second selection signal for selecting each load element in a specific load circuit among the load circuits are generated. In an electronic device equipped with a time division drive display control circuit, a plurality of input switches and a first circuit that applies the first selection signal to a common connection terminal to which one terminal of the plurality of input switches are commonly connected; , comprising a second circuit that applies a selection signal for the load element to the other terminal of the plurality of input switches, and a determination circuit that determines the state of the input switch by determining the potential of the common connection terminal. An input device characterized by:
JP1988036927U 1988-03-19 1988-03-19 Input device Expired - Lifetime JPH0615311Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988036927U JPH0615311Y2 (en) 1988-03-19 1988-03-19 Input device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988036927U JPH0615311Y2 (en) 1988-03-19 1988-03-19 Input device

Publications (2)

Publication Number Publication Date
JPH01142040U true JPH01142040U (en) 1989-09-28
JPH0615311Y2 JPH0615311Y2 (en) 1994-04-20

Family

ID=31263513

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988036927U Expired - Lifetime JPH0615311Y2 (en) 1988-03-19 1988-03-19 Input device

Country Status (1)

Country Link
JP (1) JPH0615311Y2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6132128A (en) * 1984-07-24 1986-02-14 Sharp Corp Key input device
JPS6146624U (en) * 1984-08-29 1986-03-28 シャープ株式会社 key input circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6132128A (en) * 1984-07-24 1986-02-14 Sharp Corp Key input device
JPS6146624U (en) * 1984-08-29 1986-03-28 シャープ株式会社 key input circuit

Also Published As

Publication number Publication date
JPH0615311Y2 (en) 1994-04-20

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