JPS57141744A - Data communication system - Google Patents

Data communication system

Info

Publication number
JPS57141744A
JPS57141744A JP56027770A JP2777081A JPS57141744A JP S57141744 A JPS57141744 A JP S57141744A JP 56027770 A JP56027770 A JP 56027770A JP 2777081 A JP2777081 A JP 2777081A JP S57141744 A JPS57141744 A JP S57141744A
Authority
JP
Japan
Prior art keywords
data
coupling
bus
bit
peripheral device
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
Application number
JP56027770A
Other languages
Japanese (ja)
Inventor
Mitsuo Ishii
Yasushi Inamoto
Sadao Kodama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP56027770A priority Critical patent/JPS57141744A/en
Publication of JPS57141744A publication Critical patent/JPS57141744A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/382—Information transfer, e.g. on bus using universal interface adapter
    • G06F13/387—Information transfer, e.g. on bus using universal interface adapter for adaptation of different data processing systems to different peripheral devices, e.g. protocol converters for incompatible systems, open system

Abstract

PURPOSE:To achieve coupling with a peripheral device with one kind of interface, by enabling one host computer out of two host computers to make transmission and reception of data with the peripheral device via an accessory device. CONSTITUTION:Taking data on a bus 11 as 7-bit and data on buses 9 and 10 as 16-bit, an adaptor 6 changes 7-bit data received from the bus 11 into 16-bit data and transmits the data to the bus 10. The data received from the bus 10 is converted into 7-bit data and transmitted to the bus 11. Thus, the buses 9 and 10 are of the same specifications, and a peripheral device 7 can make transmission and reception of data without distinguishing the coupling from direct coupling (coupling with a host computer 1) or communication line coupling (coupling with a host computer 2). In the computer 2, a display device and the like is used as the peripheral device and other symbols than characters may be used. Thus, the device 6 has two modes, and the 1st mode is used in case of transmission and reception of characters only and the 2nd mode is used when data other than the characters are used.
JP56027770A 1981-02-27 1981-02-27 Data communication system Pending JPS57141744A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56027770A JPS57141744A (en) 1981-02-27 1981-02-27 Data communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56027770A JPS57141744A (en) 1981-02-27 1981-02-27 Data communication system

Publications (1)

Publication Number Publication Date
JPS57141744A true JPS57141744A (en) 1982-09-02

Family

ID=12230208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56027770A Pending JPS57141744A (en) 1981-02-27 1981-02-27 Data communication system

Country Status (1)

Country Link
JP (1) JPS57141744A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6177948A (en) * 1984-09-25 1986-04-21 Nec Corp Data processor
JPS61262341A (en) * 1985-05-16 1986-11-20 Toshiba Corp Protocol conversion system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6177948A (en) * 1984-09-25 1986-04-21 Nec Corp Data processor
JPS61262341A (en) * 1985-05-16 1986-11-20 Toshiba Corp Protocol conversion system

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