JPH021796U - - Google Patents
Info
- Publication number
- JPH021796U JPH021796U JP7881788U JP7881788U JPH021796U JP H021796 U JPH021796 U JP H021796U JP 7881788 U JP7881788 U JP 7881788U JP 7881788 U JP7881788 U JP 7881788U JP H021796 U JPH021796 U JP H021796U
- Authority
- JP
- Japan
- Prior art keywords
- scanning
- circuit wiring
- matrix circuit
- scanning signal
- signal generating
- 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 claims description 5
- 238000010586 diagram Methods 0.000 description 3
Description
第１図はこの考案を適用して構成した電子楽器
の全体回路図、第２図は操作子走査回路の詳細図
、第３図はクロツクＡ，Ｂ及びＣを作るＣＰＵ内
部の部分的回路図、第４図は第３図で使用されて
いるＮＡＮＤ回路の真理値表を示している図、第
５図は第３図で使用されているデコーダの真理値
表を示している図、第６図は第２図で使用されて
いるトライステートバツフアの真理値表を示して
いる図である。
１……ＣＰＵ、２……鍵盤部、３……スイツチ
部、６……ＲＯＭ、７……ＲＡＭ、８……楽音作
成部、１１……スピーカ、１２，１３，１４……
マトリクス、１２ａ，１３ａ，１４ａ……トライ
ステートバツフア。
Figure 1 is an overall circuit diagram of an electronic musical instrument constructed by applying this invention, Figure 2 is a detailed diagram of the operator scanning circuit, and Figure 3 is a partial circuit diagram inside the CPU that creates clocks A, B, and C. , Figure 4 shows the truth table of the NAND circuit used in Figure 3, Figure 5 shows the truth table of the decoder used in Figure 3, and Figure 6 shows the truth table of the decoder used in Figure 3. The figure shows a truth table of the tristate buffer used in FIG. 2. 1... CPU, 2... Keyboard section, 3... Switch section, 6... ROM, 7... RAM, 8... Musical tone creation section, 11... Speaker, 12, 13, 14...
Matrix, 12a, 13a, 14a...tristate buffer.
Claims (1)
、このグループ分けされた複数のスイツチを夫々
配線接続した複数のマトリクス回路配線手段と、 これらの複数のマトリクス回路配線手段を繰り
返し走査するための走査信号を発生する走査信号
発生手段と、 この走査信号発生手段を制御して、最も使用頻
度の高いマトリクス回路配線手段に対する走査処
理を行うと共に、その他のマトリクス回路配線手
段に対して順番に、又はその使用頻度に応じて順
次走査処理を行う走査制御手段と を具備したことを特徴とする電子機器の走査装
置。[Scope of Claim for Utility Model Registration] A plurality of matrix circuit wiring means in which a plurality of switches are grouped according to the frequency of use, and each of the grouped switches is connected by wire, and a plurality of matrix circuit wiring means are repeatedly connected to each other. A scanning signal generating means for generating a scanning signal for scanning, and a scanning signal generating means for controlling the scanning signal generating means to perform scanning processing for the most frequently used matrix circuit wiring means, and for other matrix circuit wiring means. A scanning device for an electronic device, comprising: a scanning control device that performs scanning processing sequentially or sequentially according to the frequency of use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7881788U JPH021796U (en) | 1988-06-16 | 1988-06-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7881788U JPH021796U (en) | 1988-06-16 | 1988-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH021796U true JPH021796U (en) | 1990-01-08 |
Family
ID=31303714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7881788U Pending JPH021796U (en) | 1988-06-16 | 1988-06-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH021796U (en) |
-
1988
- 1988-06-16 JP JP7881788U patent/JPH021796U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS54134616A (en) | Electronic musical instrument | |
| JPH021796U (en) | ||
| JPH0164697U (en) | ||
| JPS6373797U (en) | ||
| JPS62143998U (en) | ||
| JPS6421539U (en) | ||
| JPH01123899U (en) | ||
| JPS62197192U (en) | ||
| JPH0227197U (en) | ||
| JPH021791U (en) | ||
| JPS63105189U (en) | ||
| JPH025799U (en) | ||
| JPH0161616U (en) | ||
| JPS6329196U (en) | ||
| JPH01103888U (en) | ||
| JPH03100933U (en) | ||
| JPS63194399U (en) | ||
| JPS6021794U (en) | electronic musical instruments | |
| JPS5891797U (en) | electronic harmonic instrument | |
| JPH02131800U (en) | ||
| JPS61119195U (en) | ||
| JPH043493U (en) | ||
| JPH0160273U (en) | ||
| JPS646697U (en) | ||
| JPS587193U (en) | electronic musical instruments |