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From: Thomas Koenig <tkoenig@netcologne.de>
Newsgroups: comp.arch
Subject: Re: The Design of Design
Date: Sun, 12 May 2024 13:17:56 -0000 (UTC)
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Tim Rentsch <tr.17687@z991.linuxsc.com> schrieb:
> "Stephen Fuld" <SFuld@alumni.cmu.edu.invalid> writes:
>
>> Scott Lurndal wrote:
>>
>>> "Stephen Fuld" <SFuld@alumni.cmu.edu.invalid> writes:
>>>
>>>> Tim Rentsch wrote:
>>>>
>>>>> The problem it was trying to solve is contained in its name:  Job
>>>>> Control Language.  It tacitly accepted the non-interactive batch
>>>>> model for what it needed to address.
>>>>
>>>> You may be right, but correct me if I am wrong, there was no
>>>> non-interactive model in the mid 1960s when JCL was devised.
>>>
>>> BASIC and DTSS was developed in 1963.
>>
>> Good Point.  So IBM was "guuilty" of vastly mis-understanding and under
>> estimating the future importance of interactive users.
>
> Work on System/360 started in 1961 (and in some sense two years
> earlier, but let's not get into that).  System/360 and OS/360
> were announced in April 1964.  The Dartmouth Time Sharing System
> first became operational in early 1964 and wasn't available for
> use until after System/360 and OS/360 had been announced and
> already had years of development.

Brooks mentions this in the requirements:  The /360 was supposed
to allow remote access for real-time database access and batch
job execution (for which he mentioned airline reservartion
systems).  Interactive use was not in the requirements.