300:
513:
332:
165:
93:
27:
102:
389:(Card readers, printers, punches) are connected to a 7600 Input/Output control via a 7603 synchronizer that buffers cards and print lines. Completion of a transfer between the device and the buffer generates a priority interrupt. Transfers between the buffer and core storage delay the processor until completion. Transfers are limited to 16 words.
232:
382:
Ten 729 tape drives can be attached to each of 4 I/O channels. Four 7300 disk drives can be attached to the first two channels. The channels run asynchronously to the processor and generate priority interrupts upon completion of an operation.
265:. Characters were represented by a two-digit code. The machine shipped with 5,000 or 9,990 words of core memory and the CPU speed was about 27KIPS. A typical system was leased for $ 17,400 per month or could be purchased for $ 813,000.
370:
models II and IV tape drives attached to an IBM 7604 Tape
Control, and 6 (3 input, 3 output) unit record devices attached to an IBM 7603 Input/Output Synchronizer via an IBM 7600 Input/Output control.
246:
instruction set, as the latter had a second jump address in every instruction to allow optimal use of the drum, something unnecessary and wasteful in a computer with random-access
496:
Up to three 7550 Card punches can be attached to the 7603 Input/Output
Synchronizer. The 75050 punches 80-column cards at up to 250 cards per minute. The installation must wire a
484:
Up to three 7500 Card readers can be attached to the 7603 Input/Output
Synchronizer. The 7500 reads 80-column cards at up to 500 cards per minute. The installation must wire a
472:
Up to three 7400 Printers can be attached to the 7603 Input/Output
Synchronizer. The 7400 prints 120 column lines at up to 150 lines per minute. The installation must wire a
412:
computers. It is available as a model II and a faster model IV. The models II and IV normally record at 556 BPI, but they support 200 BPI for compatibility with the older
983:
464:
is a slower, less expensive, alternative to the 729; it is not used on the 7070 or 7074. Like the 729 II and IV, the 7330 supports dual (200 BPI/556 BPI) density.
254:
upgrade, but failed miserably due to its incompatibilities, including an inability to fully represent the 705 character set; forcing IBM to quickly introduce the
379:
Every I/O operation uses a list of Record
Definition Words (RDWs); the last RDW in the list has a minus sign. Each RDW has a beginning and ending address.
689:
618:
The 1414-6 is connected to 7070/7074 via the IBM 7907 Data
Channel Switch. The 7907 can execute channel programs from the main memory of the 7070.
319:(SMS) cards. A total of about 30,000 alloy-junction germanium transistors and 22,000 germanium diodes are used, on approximately 14,000 SMS cards.
973:
424:
The 7150 includes a console typewriter that both controls the system and communicates with the running program via the 7600 I/O control.
308:
242:
The 7070 was expected to be a "common successor to at least the 650 and the 705". The 7070 was not designed to be compatible with the
891:"7070-7074 Data Processing System Bulletin, IBM 1414 Model 6 Input-Output Synchronizer, IBM 7907 Data Channel Switch Special Feature"
749:
719:
890:
978:
801:
236:
988:
299:
416:
and 729 model I. The models V and VI, supporting 800 BPI, were announced later. The 729 is not used on the 7072.
919:
362:
The 7070, 7072 and 7074 support a variety of peripheral devices. including up to 1 7150 console typewriter, 4
697:
842:
316:
225:
261:
The 7070 series stored data in words containing 10 decimal digits plus a sign. Digits were encoded using a
765:
600:
IBM 1414-6 Input-Output
Synchronizer contains 6 buffers and can attach a variety of serial I/O devices:
386:
954:
Contains about 10 pages of IBM 7070 survey detail: applications, customers, specifications, and costs.
392:
The 7150 console and 7501 console card reader are connected directly to the 7600 Input/Output control
262:
572:
Disk
Storage Units. The 1301 attaches to an IBM 7907 Data Channel via an IBM 7631-II File Control.
409:
213:
312:
745:
741:
734:
715:
947:
851:
591:
Hypertape. The 7340 attaches to an IBM 7907 Data
Channel via an IBM 7640 Hypertape Control.
250:. As a result, a simulator was needed to run old programs. The 7070 was also marketed as an
205:
548:
The 7907 is an 8-bit channel with the same interface as the 7908 and 7909 channels on the
366:
Disk-Storage units attached to an IBM 7604 Tape
Control via an IBM 7605 RAMAC Control, 40
287:
tape drives. The 7074 could be expanded to 30K words. They were eventually replaced by the
405:
568:-1 Disk Storage Unit, with a capacity of 28 million characters per module, replacing the
193:
149:
77:
512:
331:
967:
914:
164:
92:
26:
949:
A Third Survey of Domestic Electronic Digital Computing Systems: IBM 7070 Section
247:
221:
940:
732:
Bashe, Charles J.; Johnson, Lyle R; Palmer, John H.; Pugh, Emerson W. (1986).
288:
217:
101:
923:
497:
485:
473:
910:
850:. International Workshop on Managing Requirements Knowledge. Philadelphia.
934:
855:
928:
648:
588:
576:
569:
565:
553:
549:
461:
449:
445:
433:
363:
280:
255:
869:
652:
627:
413:
401:
367:
284:
251:
243:
67:
63:
957:
820:
231:
298:
230:
630:, IBMs first all-transistor product (only plugboard-programmable)
268:
The 7070 weighed 23,150 pounds (11.6 short tons; 10.5 t).
774:
507:
326:
209:
920:
BIRTH OF AN UNWANTED IBM COMPUTER Computer History Vignettes
208:
intermediate data-processing system that was introduced by
448:
Disk Storage Unit has a capacity of 6 million digits. The
952:. Ballistic Research Laboratories (BRL). Report No. 1115.
258:
as a "transistorized IBM 705" that was fully compatible.
937:– Includes a cross assembler for the IBM 7070/7074
224:
of the 1950s. It was the company's first transistorized
524:
343:
841:
Avery, R. W.; Blackford, S. H.; McDonnell, L. (1958).
315:(in the timing storage and core storage sections) on
609:
1014 Remote Enquiry Units (keyboards and typewriter)
189:
171:
145:
137:
129:
111:
73:
59:
51:
33:
800:
733:
710:Emerson W. Pugh, Lyle R. Johnson, John H. Palmer,
404:is a 7-track tape drive common to most of the IBM
279:(1961), a less expensive system using the slower
271:Later systems in this series were the faster
8:
157:
85:
19:
664:Expansion beyond 6 729 drives requires the
579:, with quadruple the capacity of the 1301.
432:The 7151 console card reader is a modified
156:
84:
18:
16:Decimal computer introduced by IBM in 1958
802:"A Quicker Computer Introduced by I.B.M."
500:to control the layout of the print line.
476:to control the layout of the print line.
885:
883:
870:"ADYY: Three-Way OR (out-of-phase load)"
311:(in the logic and control sections) and
681:
640:
984:Computer-related introductions in 1959
836:
834:
821:"CG: CTDL-Two Way "And" PNP No Loads"
323:Input/Output in original announcement
7:
787:
488:to control the layout of the cards.
307:The 7070 was implemented using both
844:The IBM 7070 Data Processing System
603:1009 Data Transmission Unit (modem)
14:
655:drives used by the 7070 and 7074.
690:"Trucks, sheep and the IBM 7070"
511:
504:Additional or optional I/O units
330:
275:introduced in July 1960 and the
163:
100:
91:
25:
712:IBM's 360 and early 370 systems
946:Weik, Martin H. (March 1961).
1:
960:at Classic Computer Brochures
668:optional feature on the 7604.
974:IBM transistorized computers
935:Dave Pitts' IBM 7090 support
651:tape drives in place of the
235:IBM 7070 transistor circuit
216:, and was based on discrete
212:in 1958. It was part of the
809:. July 8, 1960. p. 29.
777:. pp. 8–9. A22-7003-1.
587:In 1961, IBM announced the
575:In 1963, IBM announced the
564:In 1961, IBM announced the
177:; 63 years ago
117:; 64 years ago
39:; 66 years ago
1005:
958:Cover of IBM 7070 brochure
666:additional tape attachment
560:1301 and 1302 Disk storage
913:Experiences of one user,
767:IBM 7070 Reference Manual
647:The 7072 uses the slower
420:7150 Console control unit
162:
99:
90:
24:
428:7151 console card reader
440:7300 Disk Storage Units
317:Standard Modular System
295:Hardware implementation
226:stored-program computer
929:IBM 7070 documentation
606:1011 Paper Tape Reader
304:
239:
856:10.1109/AFIPS.1958.82
736:IBM's Early Computers
595:1414 I/O Synchronizer
452:replaced it in 1961.
302:
291:, announced in 1964.
234:
133:5,000 to 30,000 words
436:that can only read.
263:two-out-of-five code
206:decimal-architecture
55:5,000 or 9,990 words
979:IBM 700/7000 series
714:, MIT Press, 1991,
612:Telegraph I/O units
387:Unit-record devices
214:IBM 700/7000 series
159:
87:
21:
523:. You can help by
342:. You can help by
313:current-mode logic
305:
240:
989:Decimal computers
874:SMS Card Database
825:SMS Card Database
544:7907 Data Channel
541:
540:
375:Mode of operation
360:
359:
199:
198:
155:
154:
83:
82:
996:
953:
931:on Bitsavers.org
898:
897:
895:
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797:
791:
785:
779:
778:
772:
762:
756:
755:
739:
729:
723:
708:
702:
701:
696:. Archived from
686:
669:
662:
656:
645:
536:
533:
515:
508:
480:7500 Card reader
355:
352:
334:
327:
220:rather than the
185:
183:
178:
167:
160:
125:
123:
118:
104:
95:
88:
47:
45:
40:
29:
22:
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764:
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752:
740:. MIT. p.
731:
730:
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709:
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688:
687:
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673:
672:
663:
659:
646:
642:
637:
624:
597:
585:
562:
546:
537:
531:
528:
521:needs expansion
506:
494:
492:7550 Card punch
482:
470:
458:
456:7330 Tape drive
442:
430:
422:
398:
396:729 Tape drives
377:
356:
350:
347:
340:needs expansion
325:
297:
181:
179:
176:
121:
119:
116:
107:
43:
41:
38:
17:
12:
11:
5:
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976:
966:
965:
962:
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955:
943:
938:
932:
926:
917:
906:
905:External links
903:
900:
899:
879:
861:
830:
812:
807:New York Times
792:
780:
757:
750:
724:
703:
700:on 2005-01-22.
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596:
593:
584:
583:7340 Hypertape
581:
561:
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545:
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539:
538:
518:
516:
505:
502:
493:
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481:
478:
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321:
296:
293:
197:
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194:IBM System/360
191:
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173:
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153:
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150:IBM System/360
147:
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139:
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131:
127:
126:
113:
109:
108:
105:
97:
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81:
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78:IBM System/360
75:
71:
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61:
57:
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53:
49:
48:
35:
31:
30:
15:
13:
10:
9:
6:
4:
3:
2:
1001:
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987:
985:
982:
980:
977:
975:
972:
971:
969:
959:
956:
951:
950:
944:
942:
941:IBM 7070 film
939:
936:
933:
930:
927:
925:
921:
918:
916:
915:Tom Van Vleck
912:
909:
908:
904:
892:
886:
884:
880:
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871:
865:
862:
857:
853:
846:
845:
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831:
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813:
808:
803:
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789:
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761:
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753:
751:0-262-02225-7
747:
743:
738:
737:
728:
725:
721:
720:0-262-16123-0
717:
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582:
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578:
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526:
522:
519:This section
517:
514:
510:
509:
503:
501:
499:
491:
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487:
479:
477:
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407:
403:
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365:
354:
345:
341:
338:This section
336:
333:
329:
328:
322:
320:
318:
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301:
294:
292:
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286:
282:
278:
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132:
128:
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98:
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89:
79:
76:
72:
69:
65:
62:
58:
54:
50:
36:
32:
28:
23:
948:
911:The IBM 7070
896:. IBM. 1962.
873:
864:
843:
824:
815:
806:
795:
783:
766:
760:
735:
727:
711:
706:
698:the original
693:
684:
665:
660:
643:
617:
586:
574:
563:
547:
529:
525:adding to it
520:
495:
483:
471:
468:7400 Printer
459:
443:
431:
423:
399:
391:
385:
381:
378:
361:
348:
344:adding to it
339:
306:
276:
272:
270:
267:
260:
241:
222:vacuum tubes
201:
200:
172:Release date
112:Release date
34:Release date
283:instead of
248:core memory
218:transistors
138:Predecessor
60:Predecessor
968:Categories
676:References
532:April 2023
498:tplugboard
351:April 2023
289:System/360
237:SMS boards
924:Bob Bemer
788:Weik 1961
486:plugboard
474:plugboard
190:Successor
146:Successor
74:Successor
622:See also
589:IBM 7340
577:IBM 1302
570:IBM 7300
566:IBM 1301
462:IBM 7330
450:IBM 1301
446:IBM 7300
434:keypunch
303:IBM 7074
277:IBM 7072
273:IBM 7074
256:IBM 7080
202:IBM 7070
158:IBM 7072
141:IBM 7070
106:IBM 7074
86:IBM 7074
20:IBM 7070
722:, p. 50
628:IBM 608
414:IBM 727
402:IBM 729
252:IBM 705
180: (
120: (
68:IBM 705
64:IBM 650
42: (
748:
718:
130:Memory
52:Memory
894:(PDF)
848:(PDF)
771:(PDF)
635:Notes
408:and
204:is a
746:ISBN
716:ISBN
649:7330
554:7090
552:and
550:7080
460:The
444:The
410:70xx
406:14xx
400:The
364:7300
309:CTDL
281:7330
182:1961
175:1961
122:1960
115:1960
44:1958
37:1958
922:by
852:doi
775:IBM
742:473
694:IBM
653:729
527:.
368:729
346:.
285:729
244:650
210:IBM
970::
882:^
872:.
833:^
823:.
805:.
773:.
744:.
692:.
556:.
66:;
876:.
858:.
854::
827:.
790:.
754:.
534:)
530:(
353:)
349:(
228:.
184:)
124:)
46:)
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