JPH0330134U - - Google Patents
Info
- Publication number
- JPH0330134U JPH0330134U JP8992789U JP8992789U JPH0330134U JP H0330134 U JPH0330134 U JP H0330134U JP 8992789 U JP8992789 U JP 8992789U JP 8992789 U JP8992789 U JP 8992789U JP H0330134 U JPH0330134 U JP H0330134U
- Authority
- JP
- Japan
- Prior art keywords
- keyboard
- signal
- built
- controller
- switching signal
- 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
Links
- 239000011159 matrix material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Input From Keyboards Or The Like (AREA)
Description
第１図は本考案の実施例を示すブロツク図であ
る。
１…メインＣＰＵ、２…シリアル入出力インタ
ーフエイス（ＳＩＯ）、３…内蔵キーボードコン
トローラ（内蔵ＫＢＣ）、４…内蔵キーボードマ
トリクス、５…オア回路、６…アンド回路、７…
コネクタ、Ａ…外付けキーボード、８…外付けキ
ーボードコントローラ（外付けＫＢＣ）、９…外
付けキーボードマトリクス。
FIG. 1 is a block diagram showing an embodiment of the present invention. 1... Main CPU, 2... Serial input/output interface (SIO), 3... Built-in keyboard controller (built-in KBC), 4... Built-in keyboard matrix, 5... OR circuit, 6... AND circuit, 7...
Connector, A...External keyboard, 8...External keyboard controller (external KBC), 9...External keyboard matrix.
Claims (1)
れぞれのキーボードが持つキーボードコントロー
ラによりキー入力処理がなされるキーボードシス
テムに於いて、上記キーボードの特殊キー操作を
認識し、この特殊キー操作に伴い切替え信号を発
生する内蔵のキーボードコントローラと、上記切
替え信号によつて、一方のキーボードコントロー
ラの信号を有効または無効にするゲート回路とを
具備することを特徴とするキーボードシステム構
造。 In a keyboard system in which an external keyboard is attached in addition to the built-in keyboard, and key input processing is performed by the keyboard controller of each keyboard, special key operations on the above keyboard are recognized and a switching signal is generated in response to this special key operation. A keyboard system structure comprising: a built-in keyboard controller that generates a signal; and a gate circuit that enables or disables a signal of one of the keyboard controllers according to the switching signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8992789U JPH0330134U (en) | 1989-07-31 | 1989-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8992789U JPH0330134U (en) | 1989-07-31 | 1989-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0330134U true JPH0330134U (en) | 1991-03-25 |
Family
ID=31639477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8992789U Pending JPH0330134U (en) | 1989-07-31 | 1989-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0330134U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005088899A (en) * | 2003-09-12 | 2005-04-07 | Fumakilla Ltd | Dehumidifier packaging container |
-
1989
- 1989-07-31 JP JP8992789U patent/JPH0330134U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005088899A (en) * | 2003-09-12 | 2005-04-07 | Fumakilla Ltd | Dehumidifier packaging container |
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