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IBM remote batch terminals

October 18, 2023

The IBM 2780 and the IBM 3780 are devices developed by IBM to perform remote job entry (RJE) and other batch functions over telephone[a] lines; they communicate with the mainframe via Binary Synchronous Communications (BSC or Bisync) and replaced older terminals using synchronous transmit-receive (STR). In addition, IBM has developed workstation programs for the 1130, 360/20, 2922, System/360 other than 360/20, System/370 and System/3.

2780 Data Transmission Terminals Edit

The 2780 Data Transmission Terminal first shipped in 1967.[1] It consists of:

  • A line printer similar to the IBM 1443[2] that can print up to 240 lines per minute (lpm), or 300 lpm using an extremely restricted character set.
  • A card reader/punch unit, similar to an IBM 1442, that can read up to 400 cards per minute (cpm) and can punch up to 355 cpm.
  • A line buffer that stores data received or to be transmitted over the communications line.
  • A binary synchronous adapter which controls the flow of data over the communications line.

The 2780 is capable of local (offline) card to print operation.

It comes in four models:[3]

  • Model 1: Can read punched cards and transmit the data to a remote host computer, and can receive and print data sent by the host.
  • Model 2: Same as Model 1 but adds the ability to punch card data received from the host.
  • Model 3: Can only print data received from the host, but not send data to it.
  • Model 4: Can read and punch card data, but has no printing capabilities.

The 2780 uses a dedicated communication line at speeds of 1200, 2000, 2400 or 4800 bits per second. It is a half duplex device, although full duplex lines can be used with some increase in throughput. It can communicate in Transcode (a 6-bit code), 8-bit EBCDIC, or 7-bit ASCII.

2770 Data Communication System Edit

The 2770, announced in 1969, "was said to surpass all other IBM terminals in the variety of available input-output devices."[4] The 2770 was developed by the IBM General Products Division (GPD) in Rochester, MN.[5]

It comes standard with a desktop terminal with keyboard. The printer and other devices (any two in any combination) can be attached to the 2772 Multi-Purpose Control unit.[6] Possible devices include:

  • 50 Magnetic Data Inscriber
  • 545 Card Punch Model 3 (non-printing) or Model 4 (printing)
  • 1017 Paper Tape Reader
  • 1018 Paper Tape Punch
  • 1053 Printer Model 1
  • 1255 Magnetic Character Reader Models 1, 2 or 3
  • 2203 Printer Model A1 or A2
  • 2213 Printer Model 1 or 2
  • 2265 Display Station Model 2
  • 2502 Card Reader Model A1 or A2
  • 5496 Data Recorder

3780 Data Communications Terminal Edit

 
IBM 3780 Data Communications System

In May 1972, IBM announced the IBM 3780, an enhanced version of the 2780.[7] The 3780 was developed by IBM's Data Processing Division (DPD).[8] There is one model, with an optional card punch.

The 3780 drops Transcode support and incorporates several performance enhancements. It supports compression of blank fields in data using run-length encoding. It provides the ability to interleave data between devices, introduces double buffering, and adds support for the Wait-before-transmit ACKnowledgement (WACK) and Temporary Text Delay (TTD) Binary Synchronous control characters.[9]

  • The integrated punched card unit can read cards at 600 cards per minute.
  • The integrated printer is rated at 300, 350 or 425 lines per minute based on characters set (63, 52 or 39 characters).[10]
  • The 3781 Card Punch is an optional feature. It punches 160 columns per second, or 91 cards per minute if all 80 columns are punched.

The IBM 2780 and 3780 were later emulated on various types of equipment, including eventually the personal computer. A notable early emulation was the DN60, by Digital Equipment Corporation in the late 1970s.[11]

3770 Data Communications System Edit

In 1974 IBM Data Processing Division (DPD) offered a successor to the 3780, called the 3770 Data Communications System, supporting SDLC, BSC, BSC Multi-leaving[12] and SNA, depending on the configuration.[13] The 3770 is a family of desk console style terminals that offers a variety of keyboard and printer combinations as well as I/O equipment attachment and communications features.

The terminals come built into a desk and include the following models:[14]

  • 3771 Communication Terminal (optional card reader, optional card punch, wire matrix printer) Models 1 (40 cps printer), 2 (80 cps printer), and 3 (120 cps printer).
  • 3773 Communication Terminal (diskette, wire matrix printer) Models 1 (40 cps printer), 2 (80 cps printer), and 3 (120 cps printer). Each model has a P version which adds some programming features.
  • 3774 Communication Terminal (optional card reader, optional card punch, optional belt printer, wire matrix printer) Models 1 (80 cps printer), and 2 (120 cps printer). Each model has a P version which adds some programming features, a 480-character display and a non-removable diskette.
  • 3775 Communication Terminal (optional card reader, optional card punch, optional diskette, belt printer) Model 1 (120 lpm printer). The model P1 adds some programming features, a 480-character display and a non-removable diskette.
  • 3776 Communication Terminal (optional card reader, optional card punch, optional diskette, belt printer) Models 1 (300 lpm printer) and 2 (400 lpm printer). Models 3 and 4 are similar to models 1 and 2.
  • 3777 Communication Terminal (optional card reader, optional diskette, train printer) Model 1 (up to 1000 lpm printer depending on character set). Model 2 adds an optional card punch, model 3 adds an optional magnetic tape drive and model 4 replaces the train printer with a slower model called the IBM 3262. The model 4 also allows a second, optional, 3262.

The following I/O devices can be attached to a 3770 terminal:

  • IBM 2502 Card Reader: Models A1 (up to 150 card per minute), A2 (up to 300 cards per minute) or A3 (up to 400 cards per minute)
  • IBM 3203 Printer Model 3: 1000 LPM using 48 character set
  • IBM 3501 Card Reader: Up to 50 cards per minute desktop unit
  • IBM 3521 Card Punch: Up to 50 cards per minute
  • IBM 3782 Card Attachment unit, which allows the 2502 or 3521 to be attached to any terminal except the 3777
  • IBM 3784 Line Printer, can be attached to a 3774 as a second printer. Up to 155 LPM with 48 characters set print belt.

Workstation programs Edit

IBM distributes workstation programs with systems software including

Except for the RJE workstation programs in OS/360, these programs use a variation of BSC known as Multi-leaving.[12] In addition, IBM provides separately ordered workstation programs using BSC. Systems Network Architecture (SNA) and TCP/IP.

Workstation programs are available from IBM and third-party vendors to support all of these protocols:

  • 2770/3770
  • 2780/3780
  • Multileaving
  • Network Job Entry (NJE)
  • OS/360 RJE[15]
  • SNA
  • TCP/IP

Notes Edit

  1. ^ They used different adapters for dial and leased lines.

References Edit

  1. ^ IBM Corporation (23 January 2003). "Rochester chronology". Retrieved June 3, 2012.
  2. ^ IBM 1443 printer description
  3. ^ IBM System/370 System Summary (PDF) (Seventh ed.), IBM, December 1976, p. 8-12, GA22-7001-6
  4. ^ Pugh; et al. (1991). IBM's 360 and Early 370 Systems. The MIT Press. ISBN 0-262-16123-0.
  5. ^ "IBM Archives: Rochester Chronology". 23 January 2003. Retrieved June 24, 2012.
  6. ^ IBM Corporation. IBM Field Engineering Announcement: The IBM 2770 Data Communication System (PDF).
  7. ^ "IBM Archives: DPD chronology, page 4". IBM. 23 January 2003. Retrieved 2007-01-18.
  8. ^ "IBM Archives: DPD Chronology". 23 January 2003. Retrieved June 24, 2012.
  9. ^ Hewlett Packard. "RJE/XL Node Manager's Guide". Retrieved June 7, 2012.
  10. ^ IBM Corporation (1979). IBM Sales Manual: DP Machines (PDF).
  11. ^ Maintenance manual for the DN60 series, includes an overview of BISYNC
  12. ^ a b "Appendix B MULTI-LEAVING" (PDF). OS/VS2 HASP II Version 4 Logic - Program Number 370H-TX-001 VS2 - SVS Release 1.7 (PDF) (First ed.). IBM. September 15, 1976. pp. 7-59–7-68. GY27-7255. Retrieved March 17, 2022.
  13. ^ Frank, Ronald A. (June 25, 1975). "IBM 3770 Performance, Savings, Please Service Firm". Computerworld. Retrieved June 23, 2012.
  14. ^ IBM System/370 System Summary (PDF) (Seventh ed.), IBM, December 1976, p. 8-40, GA22-7001-6
  15. ^ IBM System/360 Operating System Remote Job Entry Program Number 360S-RC-536 (PDF) (Third ed.). IBM. November 1968. C30-2006-2. Retrieved December 23, 2021.

External References Edit

  • Component Description: IBM 2780 Data Transmission Terminal (PDF) (Fourth ed.). IBM. August 1971. GA27-3005-3. Retrieved 2020-05-28.
  • IBM Corporation (1975). Component information for the IBM 3780 data communication terminal (GA27-3063).
  • Component Description for the IBM 3776 and 3777 Communication Terminals (PDF) (Third ed.). January 1981. GA27-3145-2.
  • "BiSync, BSC". Made IT. Retrieved 2009-04-12.
  • General Information - Binary Synchronous Communicatioms (PDF). A27-3004-0.
  • Images of 2780 and 3780

October 18, 2023
remote, batch, terminals, 2780, 3780, devices, developed, perform, remote, entry, other, batch, functions, over, telephone, lines, they, communicate, with, mainframe, binary, synchronous, communications, bisync, replaced, older, terminals, using, synchronous, . The IBM 2780 and the IBM 3780 are devices developed by IBM to perform remote job entry RJE and other batch functions over telephone a lines they communicate with the mainframe via Binary Synchronous Communications BSC or Bisync and replaced older terminals using synchronous transmit receive STR In addition IBM has developed workstation programs for the 1130 360 20 2922 System 360 other than 360 20 System 370 and System 3 Contents 1 2780 Data Transmission Terminals 2 2770 Data Communication System 3 3780 Data Communications Terminal 4 3770 Data Communications System 5 Workstation programs 6 Notes 7 References 8 External References2780 Data Transmission Terminals EditThe 2780 Data Transmission Terminal first shipped in 1967 1 It consists of A line printer similar to the IBM 1443 2 that can print up to 240 lines per minute lpm or 300 lpm using an extremely restricted character set A card reader punch unit similar to an IBM 1442 that can read up to 400 cards per minute cpm and can punch up to 355 cpm A line buffer that stores data received or to be transmitted over the communications line A binary synchronous adapter which controls the flow of data over the communications line The 2780 is capable of local offline card to print operation It comes in four models 3 Model 1 Can read punched cards and transmit the data to a remote host computer and can receive and print data sent by the host Model 2 Same as Model 1 but adds the ability to punch card data received from the host Model 3 Can only print data received from the host but not send data to it Model 4 Can read and punch card data but has no printing capabilities The 2780 uses a dedicated communication line at speeds of 1200 2000 2400 or 4800 bits per second It is a half duplex device although full duplex lines can be used with some increase in throughput It can communicate in Transcode a 6 bit code 8 bit EBCDIC or 7 bit ASCII 2770 Data Communication System EditThe 2770 announced in 1969 was said to surpass all other IBM terminals in the variety of available input output devices 4 The 2770 was developed by the IBM General Products Division GPD in Rochester MN 5 It comes standard with a desktop terminal with keyboard The printer and other devices any two in any combination can be attached to the 2772 Multi Purpose Control unit 6 Possible devices include 50 Magnetic Data Inscriber 545 Card Punch Model 3 non printing or Model 4 printing 1017 Paper Tape Reader 1018 Paper Tape Punch 1053 Printer Model 1 1255 Magnetic Character Reader Models 1 2 or 3 2203 Printer Model A1 or A2 2213 Printer Model 1 or 2 2265 Display Station Model 2 2502 Card Reader Model A1 or A2 5496 Data Recorder3780 Data Communications Terminal Edit nbsp IBM 3780 Data Communications SystemIn May 1972 IBM announced the IBM 3780 an enhanced version of the 2780 7 The 3780 was developed by IBM s Data Processing Division DPD 8 There is one model with an optional card punch The 3780 drops Transcode support and incorporates several performance enhancements It supports compression of blank fields in data using run length encoding It provides the ability to interleave data between devices introduces double buffering and adds support for the Wait before transmit ACKnowledgement WACK and Temporary Text Delay TTD Binary Synchronous control characters 9 The integrated punched card unit can read cards at 600 cards per minute The integrated printer is rated at 300 350 or 425 lines per minute based on characters set 63 52 or 39 characters 10 The 3781 Card Punch is an optional feature It punches 160 columns per second or 91 cards per minute if all 80 columns are punched The IBM 2780 and 3780 were later emulated on various types of equipment including eventually the personal computer A notable early emulation was the DN60 by Digital Equipment Corporation in the late 1970s 11 3770 Data Communications System EditIn 1974 IBM Data Processing Division DPD offered a successor to the 3780 called the 3770 Data Communications System supporting SDLC BSC BSC Multi leaving 12 and SNA depending on the configuration 13 The 3770 is a family of desk console style terminals that offers a variety of keyboard and printer combinations as well as I O equipment attachment and communications features The terminals come built into a desk and include the following models 14 3771 Communication Terminal optional card reader optional card punch wire matrix printer Models 1 40 cps printer 2 80 cps printer and 3 120 cps printer 3773 Communication Terminal diskette wire matrix printer Models 1 40 cps printer 2 80 cps printer and 3 120 cps printer Each model has a P version which adds some programming features 3774 Communication Terminal optional card reader optional card punch optional belt printer wire matrix printer Models 1 80 cps printer and 2 120 cps printer Each model has a P version which adds some programming features a 480 character display and a non removable diskette 3775 Communication Terminal optional card reader optional card punch optional diskette belt printer Model 1 120 lpm printer The model P1 adds some programming features a 480 character display and a non removable diskette 3776 Communication Terminal optional card reader optional card punch optional diskette belt printer Models 1 300 lpm printer and 2 400 lpm printer Models 3 and 4 are similar to models 1 and 2 3777 Communication Terminal optional card reader optional diskette train printer Model 1 up to 1000 lpm printer depending on character set Model 2 adds an optional card punch model 3 adds an optional magnetic tape drive and model 4 replaces the train printer with a slower model called the IBM 3262 The model 4 also allows a second optional 3262 The following I O devices can be attached to a 3770 terminal IBM 2502 Card Reader Models A1 up to 150 card per minute A2 up to 300 cards per minute or A3 up to 400 cards per minute IBM 3203 Printer Model 3 1000 LPM using 48 character set IBM 3501 Card Reader Up to 50 cards per minute desktop unit IBM 3521 Card Punch Up to 50 cards per minute IBM 3782 Card Attachment unit which allows the 2502 or 3521 to be attached to any terminal except the 3777 IBM 3784 Line Printer can be attached to a 3774 as a second printer Up to 155 LPM with 48 characters set print belt Workstation programs EditIBM distributes workstation programs with systems software including OS 360 Attached Support Processor ASP Houston Automatic Spooling Priority HASP and HASP II Operating System Virtual Storage 1 OS VS1 Operating System Virtual Storage 2 OS VS2 MVS Release 2 through 3 8 MVS versions from MVS SP Version 1 through z OS Priority Output Writers Execution processors and input Readers POWER Remote Spooling Communications Subsystem RSCS Except for the RJE workstation programs in OS 360 these programs use a variation of BSC known as Multi leaving 12 In addition IBM provides separately ordered workstation programs using BSC Systems Network Architecture SNA and TCP IP Workstation programs are available from IBM and third party vendors to support all of these protocols 2770 3770 2780 3780 Multileaving Network Job Entry NJE OS 360 RJE 15 SNA TCP IPNotes Edit They used different adapters for dial and leased lines References Edit IBM Corporation 23 January 2003 Rochester chronology Retrieved June 3 2012 IBM 1443 printer description IBM System 370 System Summary PDF Seventh ed IBM December 1976 p 8 12 GA22 7001 6 Pugh et al 1991 IBM s 360 and Early 370 Systems The MIT Press ISBN 0 262 16123 0 IBM Archives Rochester Chronology 23 January 2003 Retrieved June 24 2012 IBM Corporation IBM Field Engineering Announcement The IBM 2770 Data Communication System PDF IBM Archives DPD chronology page 4 IBM 23 January 2003 Retrieved 2007 01 18 IBM Archives DPD Chronology 23 January 2003 Retrieved June 24 2012 Hewlett Packard RJE XL Node Manager s Guide Retrieved June 7 2012 IBM Corporation 1979 IBM Sales Manual DP Machines PDF Maintenance manual for the DN60 series includes an overview of BISYNC a b Appendix B MULTI LEAVING PDF OS VS2 HASP II Version 4 Logic Program Number 370H TX 001 VS2 SVS Release 1 7 PDF First ed IBM September 15 1976 pp 7 59 7 68 GY27 7255 Retrieved March 17 2022 Frank Ronald A June 25 1975 IBM 3770 Performance Savings Please Service Firm Computerworld Retrieved June 23 2012 IBM System 370 System Summary PDF Seventh ed IBM December 1976 p 8 40 GA22 7001 6 IBM System 360 Operating System Remote Job Entry Program Number 360S RC 536 PDF Third ed IBM November 1968 C30 2006 2 Retrieved December 23 2021 External References EditComponent Description IBM 2780 Data Transmission Terminal PDF Fourth ed IBM August 1971 GA27 3005 3 Retrieved 2020 05 28 IBM Corporation 1975 Component information for the IBM 3780 data communication terminal GA27 3063 Component Description for the IBM 3776 and 3777 Communication Terminals PDF Third ed January 1981 GA27 3145 2 BiSync BSC Made IT Retrieved 2009 04 12 General Information Binary Synchronous Communicatioms PDF A27 3004 0 Images of 2780 and 3780 Retrieved from https en wikipedia org w index php title IBM remote batch terminals amp oldid 1135207882, wikipedia, wiki, book, books, library,

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