JPS6232438U - - Google Patents
Info
- Publication number
- JPS6232438U JPS6232438U JP12252585U JP12252585U JPS6232438U JP S6232438 U JPS6232438 U JP S6232438U JP 12252585 U JP12252585 U JP 12252585U JP 12252585 U JP12252585 U JP 12252585U JP S6232438 U JPS6232438 U JP S6232438U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- input
- ground
- circuit
- disconnects
- 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
Landscapes
- Input From Keyboards Or The Like (AREA)
Description
第１図はこの考案の一実施例を示す電子機器の
入力回路、第２図はこの考案の従来例を示す入力
回路である。
１〜１Ｎ，２〜２Ｎ…入力用トランジスタ、４
…入力端子、５…外部接点、６…ダイオード、７
１，７２…ストローブ用トランジスタ、８…テス
ト用ダイオード、９…ステト用スイツチ、Ｓ１，
Ｓ２…ストローブ信号。
FIG. 1 shows an input circuit of an electronic device showing an embodiment of this invention, and FIG. 2 shows an input circuit of a conventional example of this invention. 1~1N, 2~2N...Input transistor, 4
...Input terminal, 5...External contact, 6...Diode, 7
1, 72... Strobe transistor, 8... Test diode, 9... Strobe switch, S1,
S2...Strobe signal.
Claims (1)
、通常時には該トランジスタの入力側を接地し、
前記入力信号を前記トランジスタに読込むときだ
け接地をしや断するストローブ回路と、入力テス
ト時には該ストローブ回路の機能を停止させて前
記トランジスタの入力側の接地を強制的にしや断
する手段とを設けたことを特徴とする電子機器の
入力回路。 The transistor that inputs the input signal from the outside and the input side of the transistor are normally grounded,
A strobe circuit that disconnects the ground only when reading the input signal to the transistor, and means that stops the function of the strobe circuit and forcibly disconnects the ground on the input side of the transistor during an input test. An input circuit for an electronic device characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12252585U JPS6232438U (en) | 1985-08-09 | 1985-08-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12252585U JPS6232438U (en) | 1985-08-09 | 1985-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6232438U true JPS6232438U (en) | 1987-02-26 |
Family
ID=31012791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12252585U Pending JPS6232438U (en) | 1985-08-09 | 1985-08-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6232438U (en) |
-
1985
- 1985-08-09 JP JP12252585U patent/JPS6232438U/ja active Pending
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