JPH0264254U - - Google Patents

Info

Publication number
JPH0264254U
JPH0264254U JP14196588U JP14196588U JPH0264254U JP H0264254 U JPH0264254 U JP H0264254U JP 14196588 U JP14196588 U JP 14196588U JP 14196588 U JP14196588 U JP 14196588U JP H0264254 U JPH0264254 U JP H0264254U
Authority
JP
Japan
Prior art keywords
input
serial
output
port
bus driver
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
JP14196588U
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 JP14196588U priority Critical patent/JPH0264254U/ja
Publication of JPH0264254U publication Critical patent/JPH0264254U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Bidirectional Digital Transmission (AREA)

Description

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

第１図はこの考案の一実施例の構成を示すブロ
ツク図。 １……マイクロコンピユータ、ＳＩ……シリア
ル入力ポート、ＳＯ……シリアル出力ポート、２
……双方向バスドライバ、Ｑ……デジタルトラン
ジスタ。 FIG. 1 is a block diagram showing the configuration of an embodiment of this invention. 1... Microcomputer, SI... Serial input port, SO... Serial output port, 2
...bidirectional bus driver, Q...digital transistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] シリアル入力ポートとシリアル出力ポートとを
独立して有し、かつシリアル入／出力ポートを持
たないマイクロコンピユータのシリアル入力ポー
トまたはシリアル出力ポートと双方向バスドライ
バとを、マイクロコンピユータからの入／出力切
換コントロール信号を受けてオン・オフ制御され
るオン・オフ手段で接続し、オン・オフ手段が接
続されていない方のポートを直接双方向バスドラ
イバと接続してなると共に、入／出力変換コント
ロール信号により双方向バスドライバのデータ通
過方向をオン・オフ手段のオン・オフ切換と関連
して切換えることを特徴とするデータ転送回路。 Input/output switching from a microcomputer between a serial input port or a serial output port and a bidirectional bus driver of a microcomputer that has independent serial input ports and serial output ports but does not have a serial input/output port. Connected by an on/off means that is controlled on/off in response to a control signal, and the port to which the on/off means is not connected is directly connected to a bidirectional bus driver, and an input/output conversion control signal. A data transfer circuit characterized in that the data passing direction of the bidirectional bus driver is switched in conjunction with on/off switching of an on/off means.
JP14196588U 1988-11-01 1988-11-01 Pending JPH0264254U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14196588U JPH0264254U (en) 1988-11-01 1988-11-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14196588U JPH0264254U (en) 1988-11-01 1988-11-01

Publications (1)

Publication Number Publication Date
JPH0264254U true JPH0264254U (en) 1990-05-15

Family

ID=31407503

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14196588U Pending JPH0264254U (en) 1988-11-01 1988-11-01

Country Status (1)

Country Link
JP (1) JPH0264254U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5989051A (en) * 1982-11-11 1984-05-23 Fujitsu Ltd Data serial transfer system
JPS61192120A (en) * 1985-02-20 1986-08-26 Matsushita Seiko Co Ltd Transmission signal switching device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5989051A (en) * 1982-11-11 1984-05-23 Fujitsu Ltd Data serial transfer system
JPS61192120A (en) * 1985-02-20 1986-08-26 Matsushita Seiko Co Ltd Transmission signal switching device

Similar Documents

Publication Publication Date Title
JPH0264254U (en)
JPH0317834U (en)
JPH0191955U (en)
JPH0330162U (en)
JPS6055114U (en) Volume variable device
JPS61156332U (en)
JPH0473228U (en)
JPS618354U (en) Direct memory access device
JPS60119121U (en) signal switching device
JPS61189625U (en)
JPS63513U (en)
JPH0274759U (en)
JPH0172646U (en)
JPS60159944U (en) Control circuit for water heaters, etc.
JPS62178659U (en)
JPS6364129U (en)
JPS6331450U (en)
JPH0386406U (en)
JPS62178679U (en)
JPS6335239U (en)
JPS6130101U (en) Control equipment for water heaters, etc.
JPS6285025U (en)
JPS62169851U (en)
JPH0373091U (en)
JPH0334148U (en)