JPH025938U - - Google Patents

Info

Publication number
JPH025938U
JPH025938U JP8394888U JP8394888U JPH025938U JP H025938 U JPH025938 U JP H025938U JP 8394888 U JP8394888 U JP 8394888U JP 8394888 U JP8394888 U JP 8394888U JP H025938 U JPH025938 U JP H025938U
Authority
JP
Japan
Prior art keywords
circuit
pulse
test pulse
test
instruction
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
JP8394888U
Other languages
Japanese (ja)
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 JP8394888U priority Critical patent/JPH025938U/ja
Publication of JPH025938U publication Critical patent/JPH025938U/ja
Pending legal-status Critical Current

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  • Tests Of Electronic Circuits (AREA)
  • Electronic Switches (AREA)

Description

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

第１図は本考案実施例の構成を示す回路図、第
２図は第１図示の切り換え回路１１、セレクタ１
２およびテストパルス発生回路１３の具体的な構
成を示す回路図である。 １…セグメントＬＥＤ、２…ＬＥＤアレイ、３
…デコーダ、４…ＩＯコントローラ、５…比較器
、６…フリツプフロツプ回路、７…積算値レジス
タ、８…カウンタ（ＢＣＤ４桁）、９ａ，９ｂ…
微分回路、１０…制御回路、１１ａ，１１ｂ…（
ＴＥＳＴ／ＲＵＮ）切り換え回路、１２ａ，１２
ｂ…セレクタ、１３ａ，１３ｂ…テストパルス発
生回路、１４ａ，１４ｂ…波形整形回路、１５ａ
，１５ｂ…フオトカプラ、１６ａ，１６ｂ…ＬＥ
Ｄ、１７…マザーボードバス、１８ａ，１８ｂ…
入力端子、２１ａ，２４ｂ，２４ｃ…抵抗、２２
…可変抵抗、２３…コンデンサ、２４ａ，２４ｂ
，２４ｃ…バツフア、２５…シユミツトトリガイ
ンバータ、２６…セレクタ、２７…（ＴＥＳＴ／
ＲＵＮ）切り換えスイツチ、２８…外部パルス信
号。 Fig. 1 is a circuit diagram showing the configuration of an embodiment of the present invention, and Fig. 2 shows the switching circuit 11 and selector 1 shown in Fig. 1.
2 is a circuit diagram showing a specific configuration of the test pulse generating circuit 2 and the test pulse generating circuit 13. FIG. 1...Segment LED, 2...LED array, 3
... Decoder, 4... IO controller, 5... Comparator, 6... Flip-flop circuit, 7... Accumulated value register, 8... Counter (BCD 4 digits), 9a, 9b...
Differential circuit, 10...control circuit, 11a, 11b...(
TEST/RUN) switching circuit, 12a, 12
b... Selector, 13a, 13b... Test pulse generation circuit, 14a, 14b... Waveform shaping circuit, 15a
, 15b...Photocoupler, 16a, 16b...LE
D, 17...Motherboard bus, 18a, 18b...
Input terminal, 21a, 24b, 24c...resistance, 22
...Variable resistor, 23...Capacitor, 24a, 24b
, 24c...Buffer, 25...Shimitsu trigger inverter, 26...Selector, 27...(TEST/
RUN) changeover switch, 28...external pulse signal.

Claims (1)

【実用新案登録請求の範囲】 外部パルスを入力する入力回路と、 作動確認用のテストパルスと発生するテストパ
ルス発生回路と、 前記入力回路から前記外部パルスおよび前記テ
ストパルス発生回路からの前記テストパルスのい
ずれか一方を選択指示する指示回路と、 該指示回路により指示されたパルスを選択出力
する選択回路と、 該選択回路の出力パルスを計数するパルス計数
回路と を具えたことを特徴とするカウンタ装置。[Claims for Utility Model Registration] An input circuit that inputs an external pulse, a test pulse generation circuit that generates a test pulse for operation confirmation, and the external pulse from the input circuit and the test pulse from the test pulse generation circuit. A counter comprising: an instruction circuit for selectively instructing one of the following; a selection circuit for selectively outputting pulses instructed by the instruction circuit; and a pulse counting circuit for counting output pulses of the selection circuit. Device.
JP8394888U 1988-06-27 1988-06-27 Pending JPH025938U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8394888U JPH025938U (en) 1988-06-27 1988-06-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8394888U JPH025938U (en) 1988-06-27 1988-06-27

Publications (1)

Publication Number Publication Date
JPH025938U true JPH025938U (en) 1990-01-16

Family

ID=31308652

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8394888U Pending JPH025938U (en) 1988-06-27 1988-06-27

Country Status (1)

Country Link
JP (1) JPH025938U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929794U (en) * 1972-06-16 1974-03-14

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61126821A (en) * 1984-11-22 1986-06-14 Nec Corp Logic lsi circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61126821A (en) * 1984-11-22 1986-06-14 Nec Corp Logic lsi circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929794U (en) * 1972-06-16 1974-03-14

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