Difference between revisions of "IBM Beam Spring Keyboards"

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[[IBM]]'s first generation '''electronic capacitive-coupled keyboards''', known as the '''beam spring keyboards''', were keyboards using the [[beam spring]] mechanism. These replaced special adaptations of the Selectric typewriter modified to communicate with a computer during the early 1970s.
  
[[IBM]]'s first generation '''Electronic Capacitive-Coupled Keyboards''', known as the '''Beam Spring Keyboards''' were keyboards using the [[Beam Spring]] mechanism. These replaced special adaptations of the Selectric typewriter modified to communicate with a computer during the early 1970s.
+
=Detachable Beamspring Keyboards=
  
==History==
+
==3101==
 +
<gallery widths="250" heights="147">
 +
IBM 3101.jpeg|IBM 3101
 +
</gallery>
  
==Common Design Features==
+
Launched in 1979, the 3101 was a low cost serial ASCII terminal designed to work with both IBM systems, and systems made by competing vendors. Its keyboard had the same physical key arrangement of the 87-key 3278 keyboards (or the 88-key Japanese layout), but featured a different housing and a different keycap colour scheme. IBM later produced a [[IBM_Model_F#IBM_3101_Model_F_Keyboard|Model F version]] that was interchangeable with the beam spring one.
 +
 
 +
<gallery widths="250" heights="167" caption="IBM 3101 Display Station">
 +
File:3101layout.jpg  | Layout diagram of US 87-key IBM 3101 keyboard
 +
File:3101japanese.jpg | Layout diagram of Japanese 88-key IBM 3101 keyboard
 +
</gallery>
 +
 
 +
==3276==
 +
<gallery widths="250" heights="147">
 +
3276.jpg| IBM 3276 Data Entry keyboard
 +
</gallery>
  
==Keyboards==
+
==3277==
 +
===66 key version===
 +
====Micro Switch====
 +
<gallery widths="250" heights="167">
 +
IBM 3277 typewriter keyboard - keyboard top.JPG| IBM 3277 with Microswitch
 +
</gallery>
  
===IBM 3277 (and related) Display Station Keyboards===
+
===78 key version===
 +
<gallery widths="250" heights="167">
 +
3277.jpg | IBM 3277 Display Station model 2 keyboard
 +
</gallery>
  
====IBM 4979 Display Station Console Keyboard====
+
==3278==
The 4979 was a terminal that was launched in 1976 alongside the IBM Series/1 minicomputer to which it was designed to be attached to. It featured a 66-key data entry style keyboard built into the terminal housing which had the same physical key arrangement as the 3277 data entry keyboard, but a different layout and keycap colour scheme.
+
The IBM 3278 Display Station keyboards were part of the 3278 Display Station which were terminals for IBM mainframes. They featured keyboards with 75 and 87-key layouts (76 and 88 for katakana), with different legends for various purposes.
  
<gallery widths=250px caption="IBM 4979 Display Station">
+
<gallery widths="250" heights="140">
File:4979.jpg|IBM 4979 Display Station.
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3278 in the 87-key layout.jpg | 3278 in the 87-key layout (modified for modern use)
File:4979layout.jpg|Layout diagram of the 4979's keyboard, taken from an IBM manual.
 
 
</gallery>
 
</gallery>
  
====External links====
+
==3279==
* [http://bitsavers.org/pdf/ibm/3270/fe/S126-0005-4_3275_3277_Display_Station_Parts_Catalog_Jul76.pdf 3275/3277 Display Station Parts Catalog]
 
* [http://bitsavers.trailing-edge.com/pdf/ibm/series1/GA34-0026-1_4979_Display_Station_Description_Mar77.pdf 4979 Display Station Description]
 
  
===IBM 3741 Data Station Keyboard===
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<gallery widths="187" heights="210">
 +
File:IBM-3279.jpg | IBM 3279 Terminal
 +
</gallery>
  
The IBM 3741, and the related IBM 3742 (which was effectively two 3741s integrated into the one desk back-to-back) were released by IBM in 1973. They were designed as a more modern (by the standards of the time) alternative to a keypunch by storing data on 8" floppy disks instead of punching holes onto card. The keyboard was somewhat similar in layout to that of the IBM 029 keypunch.
+
The IBM 3279 was IBM's first colour terminal. It was introduced in 1979. It was part of the 3270 series, using the 3270 datastream.
  
<gallery widths=250px caption="IBM 3741 Data Station">
+
==3727==
File:3741.jpg|IBM 3741 Data Station.
+
 
File:3741keyb.jpg|Close up of 3741 keyboard.
+
<gallery widths="250" heights="187">
 +
File:3101.jpg | IBM 3727 Operator Console keyboard
 
</gallery>
 
</gallery>
  
====External Links====
+
The IBM 3727 Operator Console was a variant of the 3101 designed to be attached to the the IBM 3725 Communications controller. Aside from a slightly different layout, the keyboard appears to be identical to the 3101's one.
* [http://www.corestore.org/3.htm Corestore page about IBM System/3 with pictures of 3741 Data Station]
 
  
===IBM 3604 Keyboard Display Keyboards===
+
==4978==
Launched in 1973, the IBM 3600 Financial Communication System was a set of terminals and printers for bank tellers, and the networking equipment required to interface them with an IBM mainframe. The 3604 keyboard displays were the 3600's terminals, there were six models of which Models 1 - 4 featured beam spring keyboards (Models 5 and 6 used smaller keys which, at least in later production examples, used rubber dome switches). Model 1 was a compact unit which could be equipped with one of three keyboard options:
+
[[File:IBM 4978 Keyboard Front.jpg|none|thumb|IBM 4978 keyboard (US version)]]
 +
The IBM 4978 Display Station was a terminal for the IBM Series/1 minicomputer. It used a 122-key layout with 32 relegendable keycaps.
  
* A 30-key Numeric Keypad, which featured a 15-key numeric keypad, and another 15-key block whose functionality was determined by the system software.
+
==5251==
* A Data Entry layout, which was based on the Numeric Keypad.
+
[[File:AJM-5251-1.jpg|none|thumb|IBM 5251 keyboard (US version)|alt=]]
* A 45-key Extended Numeric Keypad, which added another 15-key programmable function block to the keyboard.
+
[[File:AJM-5251-2.jpg|none|thumb|IBM 5251 keyboard with German keycaps]]
 +
The IBM 5251 Display Station was part of the 5250, which were terminals for IBM mainframes. They featured keyboards with a 83- or 85-key (Katakana) layout, similar to the later 83-key [[IBM System/23 Datamaster Keyboard|System/23 Datamaster]] and [[IBM PC/XT Model F keyboard|IBM PC keyboards]].
  
Models 2 - 4 were larger units which differed by screen size. There were two more keyboard options available in addition to the ones available for the Model 1:
+
==5253==
 +
 
 +
<gallery widths="250" heights="180">
 +
File:5253layout.jpg | Layout diagram of 84-key IBM 5253/5254 Keyboard
 +
File:ibm5254.jpg    | IBM 5254 Display Station with keyboards
 +
</gallery>
 +
 
 +
The IBM 5253 Display Station and the two-screen 5254 (not to be confused with the 5251 and 5252) were the terminals of the IBM 5520 Administrative System, which was designed to create and process documents. As with the later DisplayWriter, there were two layout options: an 82-key, 92-character keyboard; and an 84-key, 96-character keyboard. The keyboards appear to be largely identical to those of the DisplayWriter, except that they used dark keycaps with white legends.
 +
 
 +
==6580==
  
* A 74-key Alphanumeric layout, which featured an alphanumeric keypad with the same physical alphanumeric keypad layout as that on the 3277 78-key terminals. To the right of that was a numeric keypad and a number of programmable function keys. It is perhaps interesting to note that if one takes this layout, removes the Reset and Enter keys, replaces the Return and Back Tab key with an ISO-style return, and adds an extra key to each row, the result is quite similar to the physical key arrangement of the later IBM 5100.
+
The IBM 6580 DisplayWriter was a word processor introduced by IBM in 1980. It featured two keyboard configurations: 82-key (with 92 characters) and 84-key (with 96 characters). One unusual feature was that the Caps Lock key physically locked down when pressed. The keyboard also contained a speaker instead of the click solenoid found in other Beam Spring keyboards. The DisplayWriter was most likely the last IBM machine to feature a beam spring keyboard. The next year, IBM launched the System/23 Datamaster and the 5150 Personal Computer.
* A 94-key Extended Alphanumeric layout, which added an additional 20 programmable function keys to the standard Alphanumeric layout.
 
  
The 3604 was replaced by the IBM 4704 which was launched in 1982. The 4704's Model F keyboard options are somewhat similar to those of the 3604.
+
<gallery widths="250px">
 +
File:displaywriter.jpg  | 84-key DisplayWriter keyboard.
 +
File:displaywriter92.jpg | 82-key DisplayWriter keyboard.
 +
</gallery>
 +
 
 +
==7485==
 +
The IBM 7485 Display Station terminal is mentioned in certain documentation, and may have been a variant of the 3101.
  
<gallery widths=250px caption="IBM 3604 Display Keyboard">
+
<gallery widths="250">
File:3604-45key.jpg|IBM 3604 Model 1 with Extended Numeric Keypad. Note that the the long vertical key on the rightmost block appears to be non standard, as only single sized keys are present on official pictures.
+
File:7485.jpg | Layout diagram of IBM 7485 keyboard
File:3604-74key.jpg|Diagram from IBM guide showing the layout of the 74-key Alphanumeric layout.
 
File:3604-94key.jpg|IBM 3604 Model 4 with Extended Alphanumeric layout.
 
 
</gallery>
 
</gallery>
  
====External Links====
+
=Non-detachable Beamspring Keyboards=
* [http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/3600/GA27-2776-4_IBM_3600_Finance_Communication_System_Operating_Guide_Aug76.pdf IBM 3600 Finance Communication System Operating Guide]
+
 
* [http://ed-thelen.org/comp-hist/IBM-ProdAnn/3600.pdf 3600 Product Announcement Brochure]
+
==1130==
* [http://kkraftonline.de/Museum/data/3604-02.htm Klaus Kraft's site on the 3604 (In German)]
 
  
===IBM 3767 Communications Terminal Keyboard===
+
==2260==
This was a printer type terminal from IBM which featured an integrated Beam Spring keyboard.
 
  
<gallery widths=250px caption="IBM 3767 Commutations Terminal">
+
==3604==
File:IBM-3767.jpg|IBM 3767 Communications Terminal.
+
 
 +
<gallery widths="250" heights="80" caption="IBM 3604 Display keyboard">
 +
<!--File:3604-45key.jpg|IBM 3604 Model 1 with Extended Numeric Keypad. Note that the the long vertical key on the rightmost block appears to be non standard, as only single sized keys are present on official pictures.-->
 +
File:3604-74key.jpg | Diagram from an IBM guide showing the layout of the 74-key alphanumeric layout
 +
<!--File:3604-94key.jpg|IBM 3604 Model 4 with Extended Alphanumeric layout.-->
 
</gallery>
 
</gallery>
  
====External Links====
+
Launched in 1973, the IBM 3604 Keyboard Display keyboards were part of the IBM 3600 Financial Communication System, a set of terminals and printers for bank tellers, and the networking equipment required to interface them with an IBM mainframe. The 3604 keyboard displays were the 3600's terminals, there were six models of which Models 1 - 4 featured beam spring keyboards (Models 5 and 6 used smaller keys which, at least in later production examples, used rubber dome switches). Model 1 was a compact unit which could be equipped with one of three keyboard options:
* [http://ed-thelen.org/comp-hist/IBM-ProdAnn/3767.pdf 3767 Product Announcement Brochure]
 
  
===IBM System/32 Console Keyboard===
+
*A 30-key Numeric Keypad, which featured a 15-key numeric keypad, and another 15-key block whose functionality was determined by the system software.
The System/32 was a midrange system, launched by IBM in 1975. It featured a console keyboard integrated into the computer unit, whose physical key layout could be described as a half way point between the layout of Selectric-based terminals such as the IBM 2741 and the keyboard of the IBM 5251 terminal which was designed for the later System/34.
+
*A Data Entry layout, which was based on the Numeric Keypad.
 +
*A 45-key Extended Numeric Keypad, which added another 15-key programmable function block to the keyboard.
 +
 
 +
Models 2 - 4 were larger units which differed by screen size. There were two more keyboard options available in addition to the ones available for the Model 1:
 +
 
 +
*A 74-key Alphanumeric layout, which featured an alphanumeric keypad with the same physical alphanumeric keypad layout as that on the 3277 78-key terminals. To the right of that was a numeric keypad and a number of programmable function keys. It is perhaps interesting to note that if one takes this layout, removes the Reset and Enter keys, replaces the Return and Back Tab keys with an ISO-style return, replaces the Tab and Lock key with a single L-shaped key the result is quite similar to the physical key arrangement of the later IBM 5100.
 +
*A 94-key Extended Alphanumeric layout, which added an additional 20 programmable function keys to the standard Alphanumeric layout.
 +
 
 +
The 3604 was replaced by the IBM 4704 which was launched in 1982. The 4704's Model F keyboard options are somewhat similar to those of the 3604.
 +
 
 +
==3741==
 +
 
 +
<gallery widths="250" heights="187">
 +
3741keyb.jpg | Close up of an IBM 3741 keyboard
 +
</gallery>
 +
 
 +
The IBM 3741 Data Station keyboard, and the related IBM 3742 (which was effectively two 3741s integrated into the one desk back-to-back) were released by IBM in 1973. They were designed as a more modern (by the standards of the time) alternative to a keypunch by storing data on 8" floppy disks instead of punching holes onto card. The keyboard was somewhat similar in layout to that of the IBM 029 keypunch.
  
<gallery widths=250px caption="IBM System/32">
+
==3767==
File:s32.jpg|IBM System/32 Console
+
<gallery widths="250" heights="200">
 +
File:IBM-3767.jpg | IBM 3767 Communications Terminal
 
</gallery>
 
</gallery>
  
====External Links====
+
The IBM 3767 Communications Terminal keyboard was a printer type terminal from IBM which featured an integrated Beam Spring keyboard.
* [http://www.corestore.org/32.htm Corestore System/32 page]
 
* [http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/system32/GC21-7591-3_System32_OperatorsGuide_Nov76.pdf IBM System/32 Operator's Guide]
 
  
===IBM 5100 Portable Computer Keyboards===
+
==4979==
The 5100 was an early portable computer (at least portable by the standards of the time, weighing in at around 25kg) launched by IBM in 1975. The 5100 was designed to run either a BASIC interpreter, an APL one, or have the ability to toggle between them. The 75-key keyboard was available either with a standard layout, or an APL layout.
 
  
<gallery widths=250px caption="IBM 5100 Portable Computer">
+
<gallery widths="250">
File:5100.jpg|IBM 5100 with standard keyboard.
+
File:4979.jpg       | IBM 4979 Display Station
File:5100apl.jpg|IBM 5100 with APL keyboard.
+
File:4979layout.jpg | Layout diagram of the 4979's keyboard, taken from an IBM manual
 
</gallery>
 
</gallery>
  
====IBM 5110/5120 Computing System Keyboards====
+
The IBM 4979 Display Station console was a terminal that was launched in 1976 alongside the IBM Series/1 minicomputer to which it was designed to be attached to. It featured a 66-key data entry style keyboard built into the terminal housing which had the same physical key arrangement as the 3277 data entry keyboard, but a different layout and keycap colour scheme.
  
The 5110 was an updated version of the 5100 that supported additional peripherals, and the 5120 was effectively the 5110 in a different form factor, and the tape drive replaced by a pair of 8" floppy drives. The keyboards and their layouts were the same as those on the 5100 but differed by the colour of the keycaps.
+
==5100==
 +
{{Main|IBM 5100}}
  
<gallery widths=250px caption="IBM 5110/5120 Computing Systems">
+
<gallery widths="250" heights="187">
File:5110.jpg|IBM 5110 with standard keyboard.
+
File:5100.jpg   | IBM 5100 with standard keyboard.
File:5110apl.jpg|IBM 5110 with APL keyboard.
+
File:5100apl.jpg | IBM 5100 with APL keyboard.
File:5120.jpg|IBM 5120 with standard keyboard.
 
File:5120apl.jpg|IBM 5120 with APL keyboard.
 
 
</gallery>
 
</gallery>
  
====External links====
+
The IBM 5100 Portable Computer was an early portable computer (at least portable by the standards of the time, weighing in at around 25kg) launched by IBM in 1975. The 5100 was designed to run either a BASIC interpreter, an APL one, or have the ability to toggle between them. The 75-key keyboard was available either with a standard layout, or an APL layout and featured the IBM Beamspring modules.
* [http://bitsavers.org/pdf/ibm/5100/SY31-0405-3_5100maint_Oct79.pdf IBM 5100 Maintenance Information Manual]
 
* [http://bitsavers.org/pdf/ibm/5120/SY34-0192-0_5120maint_Dec79.pdf IBM 5110 Model 3 (5120) Maintenance Information Manual]
 
  
===IBM 3278 (and related) Display Station Keyboards===
+
==5110==
75 and 87-key layouts (76 and 88 for katakana), different legends for various purposes
 
  
====IBM 3101 Display Station Keyboard====
+
<gallery widths="250" heights="187">
 +
File:5110.jpg    | IBM 5110 with standard keyboard.
 +
File:5110apl.jpg | IBM 5110 with APL keyboard.
 +
</gallery>
  
====IBM System/38 Console Keyboard====
+
The IBM 5110 (launched 1978) was an updated version of the 5100 that supported additional peripherals. The keyboard and their layout were the same as those on the 5100 and on the  5120 but differed by the colour of their keycaps.
The System/38 was a midrange computer launched by IBM in 1979. In addition to the IBM 5250-series terminals that it was designed to operate with, it featured a console built into the computer unit whose keyboard had the same physical key arrangement as the 75-key 3278 keyboard.
 
  
<gallery widths=250px caption="IBM System/38">
+
==5120==
File:s38.jpg|IBM System/38 Console
+
{{Main|IBM 5120}}
 +
 
 +
<gallery widths="250" heights="187">
 +
File:IBM 5120 computer 2.jpg     | IBM 5120 with standard keyboard.
 +
File:ibm marcin wichary 5120.jpg | IBM 5120 with APL keyboard.
 
</gallery>
 
</gallery>
  
====External links====
+
The IBM 5120 (launched 1980) was effectively the 5110 in a different form factor, with a larger screen and the tape drive replaced by a pair of 8" floppy drives. The keyboard and its layout was the same as those on the 5110.
* [http://bitsavers.org/pdf/ibm/3270/fe/S126-0029-0_3276_3278_Keyboard_Assembly_Parts_Catalog_Jan83.pdf 3276/3278 Keyboard Assembly Parts Catalog]
 
  
===IBM 5251 Display Station Keyboards===
+
==System/3==
83- or 85-key (Katakana) layout, mechanically similar layout to the later 83-key [[IBM System/23 Datamaster Keyboard|System/23 Datamaster]] and [[IBM PC/XT Model F keyboard|IBM PC keyboards]]
 
  
====External links====
+
==System/6==
* [http://bitsavers.org/pdf/ibm/system34/fe/SY31-0461-0_5251_Display_Station_Model_11_Maintenance_Information_Dec77.pdf 5251 Display Station Model 11 Maintenance Information] - service manual for a 5251 terminal, including technical details on the keyboards used with the 5251
 
  
===IBM 4978 Display Station Keyboards===
+
The IBM Office  was a word processor launched by IBM in 1977. Its keyboard has been described by some sources as being similar to that used by the later 5520 and DisplayWriter systems.
  
===IBM Displaywriter Keyboards===
+
==System/32==
  
====IBM 5253 Display Station Keyboards====
+
The System/32 was a midrange system, launched by IBM in 1975. It featured a console keyboard integrated into the computer unit, whose physical key layout could be described as a half way point between the layout of Selectric-based terminals such as the IBM 2741 and the keyboard of the IBM 5251 terminal which was designed for the later System/34.
<!--
 
==== Encoding matrix ====
 
  
[[image:Displaywriter-matrix.svg|thumb|Displaywriter key encoding matrix]]
+
==System/38==
 +
The IBM System/38 Console was a midrange computer launched by IBM in 1979. In addition to the IBM 5250-series terminals that it was designed to operate with, it featured a console built into the computer unit whose keyboard had the same physical key arrangement as the 75-key 3278 keyboard.
  
{| class="wikitable" style="background:none;border:none;"
+
=External links=
|+ Displaywriter key encoding matrix
+
 
!width="5em"|
+
*[http://bitsavers.org/pdf/ibm/3270/fe/S126-0005-4_3275_3277_Display_Station_Parts_Catalog_Jul76.pdf 3275/3277 IBM Display Station parts catalog]
!width="10em"|10
+
*[http://bitsavers.trailing-edge.com/pdf/ibm/series1/GA34-0026-1_4979_Display_Station_Description_Mar77.pdf Description of the IBM 4979 Display Station]
!width="10em"|11
+
*[http://www.corestore.org/3.htm Corestore page about IBM System/3 with pictures of 3741 Data Station]
!width="10em"|12
+
*[http://www.kbdbabel.org/schematic/kbdbabel_doc_ibm_displaywriter.pdf IBM DisplayWriter controller schematic]
!width="10em"|13
+
*[http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/3600/GA27-2776-4_IBM_3600_Finance_Communication_System_Operating_Guide_Aug76.pdf IBM 3600 Finance Communication System: operating guide]
!width="10em"|14
+
*[http://ed-thelen.org/comp-hist/IBM-ProdAnn/3600.pdf IBM 3600 product announcement brochure]
!width="10em"|15
+
*[http://kkraftonline.de/Museum/data/3604-02.htm Klaus Kraft's site on the IBM 3604 (German)]
!width="10em"|16
+
*[http://ed-thelen.org/comp-hist/IBM-ProdAnn/3767.pdf IBM 3767 product announcement brochure]
!width="10em"|17
+
*[http://bitsavers.org/pdf/ibm/5100/SY31-0405-3_5100maint_Oct79.pdf IBM 5100 Maintenance Information Manual]
!width="10em"|18
+
*[http://bitsavers.org/pdf/ibm/5120/SY34-0192-0_5120maint_Dec79.pdf IBM 5110 Model 3 (5120) Maintenance Information Manual]
!width="10em"|19
+
*[http://bitsavers.org/pdf/ibm/3270/fe/S126-0029-0_3276_3278_Keyboard_Assembly_Parts_Catalog_Jan83.pdf IBM 3276/3278 keyboard assembly & parts catalog]
!width="10em"|20
+
*[http://bitsavers.trailing-edge.com/pdf/ibm/525x/SY31-0461-0_5251_Display_Station_Model_11_Maintenance_Information_Dec77.pdf IBM 5251 Display Station Model 11 maintenance information] — service manual for a 5251 terminal, including technical details on the keyboards used with the 5251
!width="10em"|21
+
*Deskthority — [https://deskthority.net/photos-f62/80s-keyboard-party-t10963.html 80s keyboard party] — MMcM's USB conversion for vintage IBM keyboards
|- style="background:#F8F8F8;"
+
*[http://www.corestore.org/32.htm Corestore's IBM System/32 page]
! rowspan="2" align="right" style="vertical-align:top;"| 1
+
*[http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/system32/GC21-7591-3_System32_OperatorsGuide_Nov76.pdf IBM System/32 operator's guide]
| B80
+
*[http://bitsavers.trailing-edge.com/pdf/ibm/3270/fe/SY27-2314-0_3277_Troubleshooting_Guide_May72.pdf IBM 3277 maintenance guide]
| B81
+
*IBM Library of manuals at [http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/ bitsavers.informatik.uni-stuttgart.de]
| B99
 
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|- style="background:#FFFFFF;"
 
| END
 
| MSG
 
| SHIFT ''L''
 
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| =
 
| INDEX
 
| MOVE
 
| SPELL
 
|- style="background:#F8F8F8;"
 
! rowspan="2" align="right" style="vertical-align:top;"| 27
 
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|- style="background:#FFFFFF;"
 
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|- style="background:#F8F8F8;"
 
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|- style="background:#FFFFFF;"
 
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| CHG FMT
 
| PAGE END
 
|- style="background:#F8F8F8;"
 
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====External links====
 
* [http://www.kbdbabel.org/schematic/kbdbabel_doc_ibm_displaywriter.pdf Controller schematic]
 
  
[[Category:List of all keyboards]]
 
[[Category:List of all IBM keyboards]]
 
 
[[Category:IBM keyboards]]
 
[[Category:IBM keyboards]]
 
[[Category:Keyboards with beam springs]]
 
[[Category:Keyboards with beam springs]]
 
[[Category:Vintage keyboards]]
 
[[Category:Vintage keyboards]]
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[[Category:List of all IBM keyboards]]
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[[Category:List of all keyboards]]

Revision as of 16:25, 12 September 2019

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IBM's first generation electronic capacitive-coupled keyboards, known as the beam spring keyboards, were keyboards using the beam spring mechanism. These replaced special adaptations of the Selectric typewriter modified to communicate with a computer during the early 1970s.

Detachable Beamspring Keyboards

3101

Launched in 1979, the 3101 was a low cost serial ASCII terminal designed to work with both IBM systems, and systems made by competing vendors. Its keyboard had the same physical key arrangement of the 87-key 3278 keyboards (or the 88-key Japanese layout), but featured a different housing and a different keycap colour scheme. IBM later produced a Model F version that was interchangeable with the beam spring one.

3276

3277

66 key version

Micro Switch

78 key version

3278

The IBM 3278 Display Station keyboards were part of the 3278 Display Station which were terminals for IBM mainframes. They featured keyboards with 75 and 87-key layouts (76 and 88 for katakana), with different legends for various purposes.

3279

The IBM 3279 was IBM's first colour terminal. It was introduced in 1979. It was part of the 3270 series, using the 3270 datastream.

3727

The IBM 3727 Operator Console was a variant of the 3101 designed to be attached to the the IBM 3725 Communications controller. Aside from a slightly different layout, the keyboard appears to be identical to the 3101's one.

4978

IBM 4978 keyboard (US version)

The IBM 4978 Display Station was a terminal for the IBM Series/1 minicomputer. It used a 122-key layout with 32 relegendable keycaps.

5251

IBM 5251 keyboard (US version)
IBM 5251 keyboard with German keycaps

The IBM 5251 Display Station was part of the 5250, which were terminals for IBM mainframes. They featured keyboards with a 83- or 85-key (Katakana) layout, similar to the later 83-key System/23 Datamaster and IBM PC keyboards.

5253

The IBM 5253 Display Station and the two-screen 5254 (not to be confused with the 5251 and 5252) were the terminals of the IBM 5520 Administrative System, which was designed to create and process documents. As with the later DisplayWriter, there were two layout options: an 82-key, 92-character keyboard; and an 84-key, 96-character keyboard. The keyboards appear to be largely identical to those of the DisplayWriter, except that they used dark keycaps with white legends.

6580

The IBM 6580 DisplayWriter was a word processor introduced by IBM in 1980. It featured two keyboard configurations: 82-key (with 92 characters) and 84-key (with 96 characters). One unusual feature was that the Caps Lock key physically locked down when pressed. The keyboard also contained a speaker instead of the click solenoid found in other Beam Spring keyboards. The DisplayWriter was most likely the last IBM machine to feature a beam spring keyboard. The next year, IBM launched the System/23 Datamaster and the 5150 Personal Computer.

7485

The IBM 7485 Display Station terminal is mentioned in certain documentation, and may have been a variant of the 3101.

Non-detachable Beamspring Keyboards

1130

2260

3604

Launched in 1973, the IBM 3604 Keyboard Display keyboards were part of the IBM 3600 Financial Communication System, a set of terminals and printers for bank tellers, and the networking equipment required to interface them with an IBM mainframe. The 3604 keyboard displays were the 3600's terminals, there were six models of which Models 1 - 4 featured beam spring keyboards (Models 5 and 6 used smaller keys which, at least in later production examples, used rubber dome switches). Model 1 was a compact unit which could be equipped with one of three keyboard options:

  • A 30-key Numeric Keypad, which featured a 15-key numeric keypad, and another 15-key block whose functionality was determined by the system software.
  • A Data Entry layout, which was based on the Numeric Keypad.
  • A 45-key Extended Numeric Keypad, which added another 15-key programmable function block to the keyboard.

Models 2 - 4 were larger units which differed by screen size. There were two more keyboard options available in addition to the ones available for the Model 1:

  • A 74-key Alphanumeric layout, which featured an alphanumeric keypad with the same physical alphanumeric keypad layout as that on the 3277 78-key terminals. To the right of that was a numeric keypad and a number of programmable function keys. It is perhaps interesting to note that if one takes this layout, removes the Reset and Enter keys, replaces the Return and Back Tab keys with an ISO-style return, replaces the Tab and Lock key with a single L-shaped key the result is quite similar to the physical key arrangement of the later IBM 5100.
  • A 94-key Extended Alphanumeric layout, which added an additional 20 programmable function keys to the standard Alphanumeric layout.

The 3604 was replaced by the IBM 4704 which was launched in 1982. The 4704's Model F keyboard options are somewhat similar to those of the 3604.

3741

The IBM 3741 Data Station keyboard, and the related IBM 3742 (which was effectively two 3741s integrated into the one desk back-to-back) were released by IBM in 1973. They were designed as a more modern (by the standards of the time) alternative to a keypunch by storing data on 8" floppy disks instead of punching holes onto card. The keyboard was somewhat similar in layout to that of the IBM 029 keypunch.

3767

The IBM 3767 Communications Terminal keyboard was a printer type terminal from IBM which featured an integrated Beam Spring keyboard.

4979

The IBM 4979 Display Station console was a terminal that was launched in 1976 alongside the IBM Series/1 minicomputer to which it was designed to be attached to. It featured a 66-key data entry style keyboard built into the terminal housing which had the same physical key arrangement as the 3277 data entry keyboard, but a different layout and keycap colour scheme.

5100

The IBM 5100 Portable Computer was an early portable computer (at least portable by the standards of the time, weighing in at around 25kg) launched by IBM in 1975. The 5100 was designed to run either a BASIC interpreter, an APL one, or have the ability to toggle between them. The 75-key keyboard was available either with a standard layout, or an APL layout and featured the IBM Beamspring modules.

5110

The IBM 5110 (launched 1978) was an updated version of the 5100 that supported additional peripherals. The keyboard and their layout were the same as those on the 5100 and on the 5120 but differed by the colour of their keycaps.

5120

The IBM 5120 (launched 1980) was effectively the 5110 in a different form factor, with a larger screen and the tape drive replaced by a pair of 8" floppy drives. The keyboard and its layout was the same as those on the 5110.

System/3

System/6

The IBM Office was a word processor launched by IBM in 1977. Its keyboard has been described by some sources as being similar to that used by the later 5520 and DisplayWriter systems.

System/32

The System/32 was a midrange system, launched by IBM in 1975. It featured a console keyboard integrated into the computer unit, whose physical key layout could be described as a half way point between the layout of Selectric-based terminals such as the IBM 2741 and the keyboard of the IBM 5251 terminal which was designed for the later System/34.

System/38

The IBM System/38 Console was a midrange computer launched by IBM in 1979. In addition to the IBM 5250-series terminals that it was designed to operate with, it featured a console built into the computer unit whose keyboard had the same physical key arrangement as the 75-key 3278 keyboard.

External links