GB2001462A - Data communication system - Google Patents

Data communication system

Info

Publication number
GB2001462A
GB2001462A GB7829283A GB7829283A GB2001462A GB 2001462 A GB2001462 A GB 2001462A GB 7829283 A GB7829283 A GB 7829283A GB 7829283 A GB7829283 A GB 7829283A GB 2001462 A GB2001462 A GB 2001462A
Authority
GB
United Kingdom
Prior art keywords
master
slave
addressed
coupled
peripheral devices
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.)
Granted
Application number
GB7829283A
Other versions
GB2001462B (en
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.)
NCR Voyix Corp
Original Assignee
NCR Corp
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 NCR Corp filed Critical NCR Corp
Publication of GB2001462A publication Critical patent/GB2001462A/en
Application granted granted Critical
Publication of GB2001462B publication Critical patent/GB2001462B/en
Expired 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
    • G06F13/40—Bus structure
    • G06F13/4004—Coupling between buses
    • G06F13/4027—Coupling between buses using bus bridges
    • G06F13/4045—Coupling between buses using bus bridges where the bus bridge performs an extender function

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Communication Control (AREA)
  • Small-Scale Networks (AREA)
  • Bus Control (AREA)
  • Information Transfer Systems (AREA)

Abstract

In a data communication system a central computer is coupled to one or more master terminals 101 via a communications adapter 209. The master terminal 101, which is coupled via a master bus adapter 208 to a plurality of slave terminals, includes a common bus 211 coupled to a microprocessor 201, a memory unit 202, and master peripheral devices 203-207 such as data displays and a printer. The slave terminals include a common bus and peripheral devices but have no processor or memory. In operation a data transfer instruction is provided on the common bus 211 and controls a read or write data exchange with an addressed master or slave peripheral device. If a slave peripheral device is addressed a serial message is transmitted by the master bus adapter 208 to supply the address to all the slave peripheral devices, but only the addressed device responds. <IMAGE>
GB7829283A 1977-07-21 1978-07-10 Data communication system Expired GB2001462B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81778077A 1977-07-21 1977-07-21

Publications (2)

Publication Number Publication Date
GB2001462A true GB2001462A (en) 1979-01-31
GB2001462B GB2001462B (en) 1982-01-20

Family

ID=25223867

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7829283A Expired GB2001462B (en) 1977-07-21 1978-07-10 Data communication system

Country Status (5)

Country Link
JP (1) JPS5422735A (en)
CA (1) CA1126362A (en)
DE (1) DE2831887C2 (en)
FR (1) FR2398420A1 (en)
GB (1) GB2001462B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0067267A1 (en) * 1981-06-11 1982-12-22 International Business Machines Corporation Document handling terminal computer system and method of operation thereof
GB2401207A (en) * 2003-04-30 2004-11-03 Agilent Technologies Inc Master slave serial bus connection has an intermediate device that interprets the requests and forwards them on by data, clock and address lines.
US7190977B2 (en) * 2001-08-31 2007-03-13 Nec Corporation Collapsible mobile terminal, its display method and its program
US10606794B1 (en) 2019-05-14 2020-03-31 Infineon Technologies Ag Clock signal monitor for slave device on a master-slave bus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE430106B (en) * 1979-06-18 1983-10-17 Ibm Svenska Ab Hierarchical Computer System
DE3003340C2 (en) * 1980-01-30 1985-08-22 Siemens AG, 1000 Berlin und 8000 München Method and circuit arrangement for the transmission of binary signals between terminal devices connected to one another via a central bus line system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0067267A1 (en) * 1981-06-11 1982-12-22 International Business Machines Corporation Document handling terminal computer system and method of operation thereof
US4513393A (en) * 1981-06-11 1985-04-23 International Business Machines Corporation Document handling terminal computer
US7190977B2 (en) * 2001-08-31 2007-03-13 Nec Corporation Collapsible mobile terminal, its display method and its program
GB2401207A (en) * 2003-04-30 2004-11-03 Agilent Technologies Inc Master slave serial bus connection has an intermediate device that interprets the requests and forwards them on by data, clock and address lines.
GB2401207B (en) * 2003-04-30 2006-11-22 Agilent Technologies Inc Master slave arrangement
US7290073B2 (en) 2003-04-30 2007-10-30 Avago Technologies Fiber Ip (Singapore) Pte Ltd Master slave serial bus apparatus
US10606794B1 (en) 2019-05-14 2020-03-31 Infineon Technologies Ag Clock signal monitor for slave device on a master-slave bus

Also Published As

Publication number Publication date
CA1126362A (en) 1982-06-22
JPS5422735A (en) 1979-02-20
FR2398420B1 (en) 1981-08-14
GB2001462B (en) 1982-01-20
FR2398420A1 (en) 1979-02-16
DE2831887C2 (en) 1983-02-10
DE2831887A1 (en) 1979-02-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee