IBM 709 - Revision history

Jnc: use new inst speed

2022-08-09T00:19:06Z

use new inst speed

Jnc: Correct cat

2018-10-19T12:16:19Z

Correct cat

Jnc: fix cat

2018-06-12T03:08:54Z

fix cat

Jnc: Mention use for CTSS

2018-04-18T12:59:45Z

Mention use for CTSS

Jnc: typo

2018-04-18T12:56:09Z

typo

Jnc: + ext link

2018-04-18T12:47:54Z

+ ext link

Jnc: add mem spd

2017-11-13T00:57:09Z

add mem spd

Jnc: Add data, links, info about index regs

2017-11-13T00:37:03Z

Add data, links, info about index regs

Jnc: +cat

2017-11-12T00:51:26Z

+cat

Jnc: An OK start

2017-11-11T17:36:51Z

An OK start

New page

{{Infobox Machine
| name = IBM 709
| manufacturer = [[International Business Machines]]
| year announced = January, 1957


| form factor = [[mainframe]]
| word size = 36 bits


| logic type = [[vacuum tube]]s




| operating system = SOS, IBSYS, IBJOB
| predecessor = [[IBM 704]]
| successor = [[IBM 7090]]

}}

The '''IBM 709''' was IBM's last major [[vacuum tube]] scientific [[mainframe]] (built at a time when computers for scientific and business computing used separate [[instruction set]]s). It was announced in January, 1957

Major advances over its predecessor, the [[IBM 704]], included [[indirect address]]ing, and [[channel]]s (called 'Data Synchronizers' at the time). A Data Synchronizer had two channels, to each of which could be attached a [[card reader]], [[card punch]] and [[printer]]; up to eight [[magnetic tape]] drives could be attached to a single channel.

Its lifetime was shortened by the switch to [[transistor]]s as the technology for computers.

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 * [http://www.computer-history.info/Page4.dir/pages/IBM.704.dir/ The IBM 704 and 709 Systems]
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+{{semi-stub}}
 [[Category:IBM Mainframes]]

← Older revision		Revision as of 03:08, 12 June 2018
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−	[[Category:IBM ~~Computers~~]]	+	[[Category:IBM Mainframes]]

← Older revision		Revision as of 12:59, 18 April 2018
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	One peculiarity of the index [[register]]s was that there were three, selected by a 3-bit field in the [[instruction]], each register being selected by one bit; if more than one bit was set, the registers indicated were logically ORed together before being used!		One peculiarity of the index [[register]]s was that there were three, selected by a 3-bit field in the [[instruction]], each register being selected by one bit; if more than one bit was set, the registers indicated were logically ORed together before being used!
		+
		+	One major advance pioneered on the 709 was [[time-sharing]]; the first time-sharing operating system, [[CTSS]], was first experimentally operated on a 709.

	Its lifetime was shortened by the switch to [[transistor]]s as the technology for computers.		Its lifetime was shortened by the switch to [[transistor]]s as the technology for computers.

@@ Line 23: / Line 23: @@
 Major advances over its predecessor, the [[IBM 704]], included [[indirect address]]ing, and [[channel]]s (called 'Data Synchronizers' at the time). A Data Synchronizer had two channels, to each of which could be attached a [[card reader]], [[card punch]] and [[printer]]; up to eight [[magnetic tape]] drives could be attached to a single channel.
-One peculuarity of the index [[register]]s was that there were three, selected by a 3-bit field in the [[instruction]], each register being selected by one bit; if more than one bit was set, the registers indicated were logically ORed together before being used!
+One peculiarity of the index [[register]]s was that there were three, selected by a 3-bit field in the [[instruction]], each register being selected by one bit; if more than one bit was set, the registers indicated were logically ORed together before being used!
 Its lifetime was shortened by the switch to [[transistor]]s as the technology for computers.

@@ Line 35: / Line 35: @@
 * [https://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP709.html 709 Data Processing System] - IBM Archive page
 * [http://www.quadibloc.com/comp/cp0309.htm From the IBM 704 to the IBM 7094]
 {{stub}}
 [[Category:IBM Computers]]

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 <!-- | virtual address = x bits -->
 | logic type = [[vacuum tube]]s
-<!-- | design type =  -->
+<!-- | design type = -->
-| clock speed = 24 μsec (basic add instruction)
+| instruction speed = 24 μsec (basic add)
 | memory speed = 12 μsec
 | operating system = SOS, IBSYS, IBJOB

@@ Line 4: / Line 4: @@
 | year announced = January, 1957
 <!-- | year first shipped = -->
-<!-- | year discontinued = -->
+| year discontinued = April, 1960
 | form factor = [[mainframe]]
 | word size = 36 bits
@@ Line 11: / Line 11: @@
 | logic type = [[vacuum tube]]s
 <!-- | design type =  -->
-<!-- | clock speed =  μsec (basic instructions) -->
+| clock speed = 24 μsec (basic add instruction)
 <!-- | memory speed = x μsec -->
 <!-- | memory mgmt = bounds register -->
@@ Line 17: / Line 17: @@
 | predecessor = [[IBM 704]]
 | successor = [[IBM 7090]]
-<!-- | price = US$30K (8KW system) -->
+| price = US$2.6M (and up)
 }}
@@ Line 23: / Line 23: @@
 Major advances over its predecessor, the [[IBM 704]], included [[indirect address]]ing, and [[channel]]s (called 'Data Synchronizers' at the time). A Data Synchronizer had two channels, to each of which could be attached a [[card reader]], [[card punch]] and [[printer]]; up to eight [[magnetic tape]] drives could be attached to a single channel.
 Its lifetime was shortened by the switch to [[transistor]]s as the technology for computers.
 {{stub}}
 [[Category:IBM Computers]]

← Older revision		Revision as of 00:51, 12 November 2017
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		+	[[Category:IBM Computers]]