JPS5451740A - Interface control circuit - Google Patents
Interface control circuitInfo
- Publication number
- JPS5451740A JPS5451740A JP11881377A JP11881377A JPS5451740A JP S5451740 A JPS5451740 A JP S5451740A JP 11881377 A JP11881377 A JP 11881377A JP 11881377 A JP11881377 A JP 11881377A JP S5451740 A JPS5451740 A JP S5451740A
- Authority
- JP
- Japan
- Prior art keywords
- input
- output terminals
- transmission line
- data transmission
- computer
- 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
- Information Transfer Systems (AREA)
Abstract
PURPOSE: To ensure the data transmission of the input and the output via the common data transmission line by producing the control signal to decide the data transmission direction based on the set pulse, and thus to realize the cost reduction.
CONSTITUTION: First and second interface control part 3 and 4 are combined via data transmission line l composed of 4 lines collected into one set which also connects data input/output terminals B0WB3 and B'0WB'3. At the same time, data input and output terminals S0WS3 and R0WR3of computer 1 are connected to input and output terminals S'0WS'3 and R'0WR'3 of control part 3 respectively, and input and output terminals BB0WBB3 and RR0WRR3 of terminal unit 2 are connected to input and output terminals BB'1WBB'3 and RR'1WRR'3 of control part 4 respectively. Set pulse ST(a) is applied through terminal L of computer 1, and control signal (b) is produced with the rise of pulse ST and then applied to transmission line lS to control the transmission direction of line l. And ratch signal RS (c) is produced after fixed time TB from the time point of ST application to be applied to terminal LLL via transmission line lR. And the output data given from computer 1 is stored in the ratch memory of terminal unit 2
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11881377A JPS5451740A (en) | 1977-09-30 | 1977-09-30 | Interface control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11881377A JPS5451740A (en) | 1977-09-30 | 1977-09-30 | Interface control circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5451740A true JPS5451740A (en) | 1979-04-23 |
Family
ID=14745761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11881377A Pending JPS5451740A (en) | 1977-09-30 | 1977-09-30 | Interface control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5451740A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56166525A (en) * | 1980-05-26 | 1981-12-21 | Hitachi Ltd | Information transferring system in input and output interface |
-
1977
- 1977-09-30 JP JP11881377A patent/JPS5451740A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56166525A (en) * | 1980-05-26 | 1981-12-21 | Hitachi Ltd | Information transferring system in input and output interface |
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