277:. The biggest change was that, in the PDP-5, the program counter was stored in memory location zero, while on PDP-8 computers, it was a register inside the CPU. Another significant change was that microcoded instructions on the PDP-5 could not combine incrementing and clearing the accumulator, while these could be combined on the PDP-8. This allowed loading of many small constants in a single instruction on the PDP-8. The PDP-5 was one of the first computer series with more than 1,000 built.
1145:
27:
1155:
198:
Although the LINC computer was intended primarily for laboratory use, the PDP-5's 12-bit system had a far wider range of use. An example of DEC's "The success of the PDP-5 ... proved that a market for minicomputers did exist" is:
320:, yet having "applications needing solutions too complicated to be solved efficiently by modules systems" the PDP-5, when introduced in 1963, came at a time when the minicomputer market was gaining a foothold.
248:, the minimum configuration of the PDP-5 was a single 19-inch cabinet with "150 printed circuit board modules holding over 900 transistors." Additional cabinets were required to house many peripheral devices.
1194:
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has been described as the first minicomputer and also "the first modern personal computer." It had 2,048 12-bit words, and the first LINC was built in 1962.
524:
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258:. Addressing more than 4,096 words of memory required the addition of a Type 154 Memory Extension Control unit (in modern terms, a
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494:"United States Report to ICNAF On Status of the Fisheries and Research Conducted in Calendar Year 1965"
203:"Data-processing computers have accomplished for mathematicians what the wheel did for transportation"
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101:
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457:"COMPUTER AN AID IN OCEAN STUDIES; Statistical Tasks Are Eased During Ice Patrol Season 1964"
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543:"Nomination form for Edson de Castro to the National Academy of Engineering"
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Of the 12 bits in each word, exactly 3 were used for instruction op-codes.
262:); this allowed adding additional Type 155 4,096 word core memory modules.
960:
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With a base price of $ 27,000 and designed for those not in need of the
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209:"A PDP-5 computer was used very successfully aboard Evergreen for ..."
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884:
861:
832:
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619:, Digital Equipment Corp., Mar. 1964; this is a promotional brochure.
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273:
The PDP-5's instruction set was later expanded in its successor, the
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405:
DIGITAL EQUIPMENT CORPORATION – Nineteen Fifty-Seven To The
Present
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The machine was offered with from 1,024 to 32,768 12-bit words of
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The minimum configuration weighed about 540 pounds (240 kg).
245:
132:
793:
601:. Digital Equipment Corporation. October 1964. p. 1-13.
176:
161:
122:
693:
423:"Wesley Clark Builds the LINC, Perhaps the First Mini-Computer"
980:
912:
180:
171:, had worked with both it and a still earlier computer, the
517:
Computer
Engineering, A DEC view of hardware systems design
438:"Wesley A. Clark, 88; MIT pioneer made computing personal"
547:
Carnegie Mellon
University Libraries Digital Collections
510:
Best, Richard; Doane, Russell; McNamara, John (1978).
381:
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228:; the principal logic designer was the young engineer
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654:. Digital Equipment Corporation. 1964. p. 12.
213:all of which described the same PDP-5 used by the
475:"COAST GUARD WASHINGTON D C OCEANOGRAPHIC UNIT"
330:PDP-5 computer, including Teletype Model 33 ASR
220:The architecture of the PDP-5 was specified by
635:. Digital Equipment Corporation. October 1969.
436:John Markoff, New York Times (March 4, 2016).
705:
190:Neither of these machines was mass-produced.
8:
549:. Carnegie Mellon University. Archived from
398:
396:
19:
680:"Who Built the First Minicomputers Part II"
612:
610:
608:
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743:
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734:
712:
698:
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512:"Digital Modules, The Basis for Computers"
206:"Very reliable data was obtained with ..."
25:
18:
358:U. S. Coast Guard Oceanographic Vessel —
1116:Compaq Professional Workstation 1000 XP
375:
351:
1195:Computer-related introductions in 1963
411:. Digital Equipment Corporation. 1975.
88: (equivalent to $ 268,709 in 2023)
7:
1154:
648:Programmed Data Processor-5 Handbook
580:"The Rise and Fall of Minicomputers"
455:John P. Callahan (June 14, 1965).
160:An earlier 12-bit computer, named
14:
442:The Boston Globe (NY Times-owned)
335:PDP-5 from Ed Thelen's collection
1153:
1144:
1143:
530:from the original on 2010-03-12.
492:Herbert W. Graham (3 May 2022).
244:By contrast with the 4-cabinet
1070:DEC 7000 AXP and DEC 10000 AXP
152:computer, introduced in 1963.
1:
721:Digital Equipment Corporation
666:"Programmed Data Processor-5"
146:Digital Equipment Corporation
38:Digital Equipment Corporation
1100:Digital Personal Workstation
1014:Digital Personal Workstation
387:"PDP-5 Historical Interlude"
16:12-bit computer from Digital
617:Programmed Data Processor 5
232:who went on later to found
69:; 61 years ago
1211:
1139:
737:
215:United States Coast Guard
48:Programmed Data Processor
24:
1190:Transistorized computers
595:PDP-5 Maintenance Manual
114:540 pounds (240 kg)
971:VAX 7000 and VAX 10000
340:Front panel of a PDP-5
260:memory management unit
1131:List of VAX computers
1121:Itsy Pocket Computer
389:. 11 December 2014.
21:
630:"PDP-5 Price List"
582:. 24 October 2019.
461:The New York Times
185:Lincoln Laboratory
82:Introductory price
1180:DEC minicomputers
1167:
1166:
1042:DECsystem servers
907:
906:
902:
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523:. Digital Press.
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1185:12-bit computers
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890:DEC Professional
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266:Instruction set
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230:Edson de Castro
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167:DEC's founder,
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553:on 2018-01-22.
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1075:DECpc AXP 150
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499:. p. 1a.
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297:Compiler and
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285:DEC provided
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194:Applicability
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1095:AlphaStation
1080:DEC 2000 AXP
1065:DEC 4000 AXP
1060:DEC 3000 AXP
867:DECSYSTEM-20
805:
674:
660:
647:
641:
624:
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551:the original
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541:Reddy, Raj.
536:
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479:WorldCat.org
478:
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234:Data General
219:
212:
197:
189:
175:64,000-word
166:
159:
141:
139:
64:Release date
58:Minicomputer
1090:AlphaServer
989:Rainbow 100
564:Ed Thelen.
309:Marketplace
256:core memory
226:Gordon Bell
119:Predecessor
96:about 1,000
1174:Categories
1037:DECstation
1004:DECstation
936:VAXstation
370:References
362:(WAGO-295)
295:FORTRAN II
222:Alan Kotok
106:DEC 12-bit
93:Units sold
86:US$ 27,000
946:VAXserver
723:computers
360:Evergreen
291:assembler
287:an editor
169:Ken Olsen
148:'s first
129:Successor
34:Developer
1149:Category
1109:See also
961:VAX 9000
956:VAX 4000
951:VAX 6000
931:VAX 8000
926:MicroVAX
525:Archived
303:debugger
281:Software
240:Hardware
102:Platform
1159:Commons
994:VAXmate
941:Firefly
828:DECmate
816:PDP-8/e
566:"PDP-1"
156:History
72: (
1085:Multia
1019:HiNote
1009:Multia
921:VAX-11
885:PDP-11
877:16-bit
862:PDP-10
849:36-bit
833:PDP-14
823:PDP-12
799:LINC-8
786:12-bit
776:PDP-15
748:18-bit
324:Photos
315:18-bit
173:18-bit
150:12-bit
1052:Alpha
999:DECpc
966:VAXft
857:PDP-6
811:PDP-8
806:PDP-5
771:PDP-9
766:PDP-7
761:PDP-4
756:PDP-1
652:(PDF)
633:(PDF)
599:(PDF)
528:(PDF)
521:(PDF)
497:(PDF)
409:(PDF)
346:Notes
318:PDP-4
289:, an
275:PDP-8
246:PDP-1
179:, at
142:PDP-5
133:PDP-8
20:PDP-5
1029:MIPS
794:LINC
293:, a
224:and
177:TX-0
162:LINC
144:was
140:The
123:LINC
111:Mass
74:1963
67:1963
54:Type
981:x86
913:VAX
730:PDP
305:).
301:(a
299:DDT
183:'s
181:MIT
1176::
607:^
545:.
514:.
477:.
459:.
440:.
395:^
378:^
236:.
217:.
187:.
713:e
706:t
699:v
682:.
668:.
568:.
481:.
463:.
444:.
425:.
76:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
