The 7070 was expected to be a "common successor to at least the 650 and the 705".[3] The 7070 was not designed to be instruction set compatible with the 650, 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 core memory. As a result, a simulator was needed to run old programs. The 7070 was also marketed as an IBM 705 upgrade, but failed miserably due to its incompatibilities, including an inability to fully represent the 705 character set; forcing IBM to quickly introduce the IBM 7080 as a "transistorized IBM 705" that was fully compatible.
The 7070 series stored data in words containing 10 decimal digits plus a sign. Digits were encoded using a two-out-of-five code. Characters were represented by a two-digit code. The machine shipped with 5,000 to 9,990 words of core memory and the CPU speed was about 27KIPS.[citation needed] A typical system was leased for $17,400 per month or could be purchased for $813,000.
The 7070 weighed 23,150 pounds (11.6 short tons; 10.5 t).[4]
Later systems in this series were the faster IBM 7074 introduced in July 1960[5] and the IBM 7072 (1961). They were eventually replaced by the System/360, announced in 1964.
The 7070 was implemented using both CTDL[6] (in the logic and control sections)[7]: 167 and current-mode logic[8] (in the timing storage and core storage sections) on Standard Modular System (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.[7]: 167
Additional or optional I/O units
Disk storage
The IBM 7300 Disk Storage Unit had a capacity of 6 million digits.
From 1961: the IBM 1301-1 Disk Storage Unit which had a capacity of 28 million characters.
IBM 1414 I/O
IBM 1414-6 Input-Output Synchronizer contains 6 buffers and can attach a variety of serial I/O devices:[9]
1009 Data Transmission Unit (modem)
1011 Paper Tape Reader
1014 Remote Enquiry Units (keyboards and typewriter)
Telegraph I/O units
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.[9]
See also
IBM 608, IBMs first all-transistor product (only plugboard-programmable)
^"A Quicker Computer Introduced by I.B.M.". New York Times. July 8, 1960. p. 29.
^"CG: CTDL-Two Way "And" PNP No Loads". SMS Card Database.
^ abAvery, R. W.; Blackford, S. H.; McDonnell, L. (1958). The IBM 7070 Data Processing System(PDF). International Workshop on Managing Requirements Knowledge. Philadelphia. doi:10.1109/AFIPS.1958.82.
^"ADYY: Three-Way OR (out-of-phase load)". SMS Card Database.
^ ab"7070-7074 Data Processing System Bulletin, IBM 1414 Model 6 Input-Output Synchronizer, IBM 7907 Data Channel Switch Special Feature" (PDF). IBM. 1962.
Dave Pitts' IBM 7090 support – Includes a cross assembler for the IBM 7070/7074
Weik, Martin H. (March 1961). A Third Survey of Domestic Electronic Digital Computing Systems: IBM 7070 Section. Ballistic Research Laboratories (BRL). Report No. 1115. Contains about 10 pages of IBM 7070 survey detail: applications, customers, specifications, and costs.
Cover of IBM 7070 brochure at Classic Computer Brochures
January 07, 2023
7070, decimal, architecture, intermediate, data, processing, system, that, introduced, 1958, part, 7000, series, based, discrete, transistors, rather, than, vacuum, tubes, 1950s, company, first, transistorized, stored, program, computer, 7074release, date1958,. IBM 7070 was a decimal architecture intermediate data processing system that was introduced by IBM in 1958 1 It was part of the IBM 700 7000 series and was based on discrete transistors rather than the vacuum tubes of the 1950s It was the company s first transistorized stored program computer 2 IBM 7070IBM 7074Release date1958 65 years ago 1958 PredecessorIBM 650 IBM 705SuccessorIBM 7080 IBM System 360IBM 7070 transistor circuit SMS boards The 7070 was expected to be a common successor to at least the 650 and the 705 3 The 7070 was not designed to be instruction set compatible with the 650 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 core memory As a result a simulator was needed to run old programs The 7070 was also marketed as an IBM 705 upgrade but failed miserably due to its incompatibilities including an inability to fully represent the 705 character set forcing IBM to quickly introduce the IBM 7080 as a transistorized IBM 705 that was fully compatible The 7070 series stored data in words containing 10 decimal digits plus a sign Digits were encoded using a two out of five code Characters were represented by a two digit code The machine shipped with 5 000 to 9 990 words of core memory and the CPU speed was about 27KIPS citation needed A typical system was leased for 17 400 per month or could be purchased for 813 000 The 7070 weighed 23 150 pounds 11 6 short tons 10 5 t 4 Later systems in this series were the faster IBM 7074 introduced in July 1960 5 and the IBM 7072 1961 They were eventually replaced by the System 360 announced in 1964 Contents 1 Hardware implementation 2 Additional or optional I O units 2 1 Disk storage 2 2 IBM 1414 I O 3 See also 4 References 5 External linksHardware implementation Edit IBM 7074 The 7070 was implemented using both CTDL 6 in the logic and control sections 7 167 and current mode logic 8 in the timing storage and core storage sections on Standard Modular System 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 7 167 Additional or optional I O units EditDisk storage Edit The IBM 7300 Disk Storage Unit had a capacity of 6 million digits From 1961 the IBM 1301 1 Disk Storage Unit which had a capacity of 28 million characters IBM 1414 I O Edit IBM 1414 6 Input Output Synchronizer contains 6 buffers and can attach a variety of serial I O devices 9 1009 Data Transmission Unit modem 1011 Paper Tape Reader 1014 Remote Enquiry Units keyboards and typewriter Telegraph I O unitsThe 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 9 See also EditIBM 608 IBMs first all transistor product only plugboard programmable References Edit Trucks sheep and the IBM 7070 IBM Emerson W Pugh Lyle R Johnson John H Palmer IBM s 360 and early 370 systems MIT Press 1991 ISBN 0 262 16123 0 p 50 Bashe Charles J Johnson Lyle R Palmer John H Pugh Emerson W 1986 IBM s Early Computers MIT p 473 ISBN 0 262 02225 7 Weik 1961 A Quicker Computer Introduced by I B M New York Times July 8 1960 p 29 CG CTDL Two Way And PNP No Loads SMS Card Database a b Avery R W Blackford S H McDonnell L 1958 The IBM 7070 Data Processing System PDF International Workshop on Managing Requirements Knowledge Philadelphia doi 10 1109 AFIPS 1958 82 ADYY Three Way OR out of phase load SMS Card Database a b 7070 7074 Data Processing System Bulletin IBM 1414 Model 6 Input Output Synchronizer IBM 7907 Data Channel Switch Special Feature PDF IBM 1962 External links EditThe IBM 7070 Experiences of one user Tom Van Vleck BIRTH OF AN UNWANTED IBM COMPUTER Computer History Vignettes by Bob Bemer IBM 7070 documentation on Bitsavers org Dave Pitts IBM 7090 support Includes a cross assembler for the IBM 7070 7074 Weik Martin H March 1961 A Third Survey of Domestic Electronic Digital Computing Systems IBM 7070 Section Ballistic Research Laboratories BRL Report No 1115 Contains about 10 pages of IBM 7070 survey detail applications customers specifications and costs Cover of IBM 7070 brochure at Classic Computer Brochures Retrieved from https en wikipedia org w index php title IBM 7070 amp oldid 1126216044, wikipedia, wiki, book, books, library,
