JPS6488622A - Function expansion system for analog input device - Google Patents
Function expansion system for analog input deviceInfo
- Publication number
- JPS6488622A JPS6488622A JP24469887A JP24469887A JPS6488622A JP S6488622 A JPS6488622 A JP S6488622A JP 24469887 A JP24469887 A JP 24469887A JP 24469887 A JP24469887 A JP 24469887A JP S6488622 A JPS6488622 A JP S6488622A
- Authority
- JP
- Japan
- Prior art keywords
- analog
- analog input
- signal
- control signal
- input 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
Landscapes
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE:To decrease the number of circuit elements by receiving an analog control signal on a route which receives an analog input signal and converts the signal to digital. CONSTITUTION:An analog-converted control signal (analog control signal 50s) is received to the same route that receives an analog input signal. Accordingly, an analog control signal line 50 to supply the signal 50s is connected to an analog input connection terminal (4) different from that (1) to which an analog input signal line 51 is connected, and a multiplexer MPX4 is switched by a switching control circuit 11 in accordance with a prescribed sequence, so that an analog input signal 51s and the analog control signal 50s are respectively inputted to an analog-digital converter 3. As a result, the connection terminal and the analog-digital converter can be used in common to these for analog input signal, hence the number of circuit elements can be reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24469887A JPS6488622A (en) | 1987-09-29 | 1987-09-29 | Function expansion system for analog input device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24469887A JPS6488622A (en) | 1987-09-29 | 1987-09-29 | Function expansion system for analog input device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6488622A true JPS6488622A (en) | 1989-04-03 |
Family
ID=17122602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24469887A Pending JPS6488622A (en) | 1987-09-29 | 1987-09-29 | Function expansion system for analog input device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6488622A (en) |
-
1987
- 1987-09-29 JP JP24469887A patent/JPS6488622A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5477013A (en) | Transmission system for picture sound | |
JPS54118723A (en) | Phase converter | |
JPS56104537A (en) | Switch matrix device | |
EP0303241A3 (en) | Track-and-hold amplifier | |
EP0319356A3 (en) | Matrix switch | |
JPS6488622A (en) | Function expansion system for analog input device | |
JPS56116101A (en) | Voltage comparator circuit | |
JPS5472949A (en) | Multiplexer circuit | |
JPS5591009A (en) | Switching control unit | |
JPS5650672A (en) | Mutual priority selecting system for 2-system signal | |
JPS6451720A (en) | Function expansion system in analog input device | |
JPS5624897A (en) | Attenuation quantity set system | |
JPS5416162A (en) | Analog-to digital converter | |
JPS5671349A (en) | Bidirectional transmission system | |
GB9421842D0 (en) | An apparatus for testing the quality of the logic levels of a digital signal | |
JPS5496927A (en) | Input circuit of microcomputer | |
EP0380137A3 (en) | Line concentration system | |
JPS57139845A (en) | Analog input/output device | |
JPS6462051A (en) | Line switching device | |
JPS54149438A (en) | Sequence control circuit | |
JPS6481540A (en) | Reception signal switching device | |
JPS6444116A (en) | Matrix switch system | |
JPS6457539A (en) | Three-stage switch | |
JPS56145422A (en) | Terminal device | |
JPS5416161A (en) | Analog-to-digital converter |