System Module: Difference between revisions

Revision as of 01:28, 22 June 2018

Revision as of 08:42, 12 April 2019

Line 5:

They use [[transistor]] inverter circuits, with the transistors operating saturated, to avoid dependence on tight tolerances; they use -3V and 0V as logic levels. Intended for prototyping as well as production, they include design features intended to avoid damage. They are provided with design advice which includes loading rules and wiring instructions.<ref name=SysMod4>"System Modules", pg. 4.1-4.9</ref>

They were available in threeseveral compatible speed lines:

* 4000-Series: the basicsecond series, speeds range fromnominally 500 KHz, but tosome 1 MHz<ref name=SysMod6>"System Modules", pg. 6.1-6.40</ref>

* 1000-Series: forthe useoriginal where extra standard output loadsseries, or -3V sources,nominally are5 neededMHz<ref name=SysMod7>"System Modules", pg. 7.1-7.16</ref>

* 6000-Series: higher speeds, 5 MHz tonominally 10 Mhz<ref name=SysMod8>"System Modules", pg. 8.1-8.13</ref>

* 8000-Series: very high speeds, nominally 30MHz<ref>"[http://bitsavers.org/pdf/dec/modules/8000_series/8000_Series_Sep64.pdf 30 Megacycle Modules"]</ref>

In addition, special modules were available for purposes such as I/O converters (to standard internal voltages), bus drivers, lamp and solenoid drivers, A/D conversion, relays, [[magnetic-core memory|core memory]] drivers, etc.<ref name=SysMod9>"System Modules", pg. 9.1-9.60</ref>

Larger assemblies which are part of the same family provide core memory testing devices, and. thereThere are also power supplies, mounting panels with slots for the modules, cabinets to hold groups of mounting panels,indicator light panels, etc, etc.<ref name=SysMod10>"System Modules", pg. 10.1-10.35</ref>

==External Links==

*[httphttps://archive.computerhistory.org/resources/access/text/2013/06/102688924-05-01-acc.pdf DEC Building Block Logic manual from the Computer History Museum, dated September 1960]

*[http://bitsavers.org/pdf/dec/handbooks/LogicHandbook_Mar61.pdf Digital Logic Handbook, Third Edition, dated March 1961].

*[http://bitsavers.org/pdf/dec/modules/System_Module_Accessories_Feb64.pdf New Module Accessories, dated February 1964]

*[http://bitsavers.org/pdf/dec/modules/8000_series/8000_Series_Sep64.pdf 30 Megacycle Modules, dated September 1964]

*[http://bitsavers.org/pdf/dec/modules/DEC_System_Modules_Jan68.pdf System Modules, dated 1968].

==Notes==

Line 23 ⟶ 28:

;References used

{{refbegin|}}

*

* {{cite book|title=Digital Logic Handbook|date=1961|publisher=Digital Equipment Corporation|___location=Maynard, Massachusetts}}

* {{Cite book|url=http://bitsavers.org/pdf/dec/_Books/Bell-ComputerEngineering.pdf|title=Computer Engineering: A DEC View of Hardware Systems Design|last=Bell|first=C. Gordon|last2=Mudge|first2=J. Craig|last3=McNamara|first3=John E.|publisher=Digital Press|year=1978|isbn=0-932376-00-2|___location=Bedford, MA, USA|pages=}}{{refend}}

* {{cite book|title=System Modules|date=1964|publisher=Digital Equipment Corporation|___location=Maynard, Massachusetts}}

* {{cite book|title=Digital Logic Handbook|last=|first=|date=1961|publisher=Digital Equipment Corporation|year=|isbn=|___location=Maynard, Massachusetts|pages=}}

{{refend}}

* {{cite book|title=System Modules|last=|first=|date=1964|publisher=Digital Equipment Corporation|year=|isbn=|___location=Maynard, Massachusetts|pages=}}

[[Category:DEC hardware]]