Image of a 1973 multi-mini computer database server

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Discussion Overview

The discussion revolves around the experiences and memories of participants regarding early computer systems, specifically focusing on a 1973 multi-mini computer database server and related technologies. The scope includes historical anecdotes, technical specifications, and personal reflections on the evolution of computing.

Discussion Character

  • Historical
  • Meta-discussion

Main Points Raised

  • One participant describes their first programming job involving multiple HP 2100 mini-computers, detailing the system's capabilities and hardware components, including hard drives and a multiplexor.
  • Another participant recalls using a Wang 700 with a nixie tube display during their undergraduate studies, expressing a nostalgic connection to early computing.
  • A different participant shares their experience with a Wang 720C in 1972, highlighting a unique programming approach to minimize memory usage and mentioning various other systems they interacted with, including the IBM 1130 and CDC 6600.
  • One participant comments on the nature of the discussion, suggesting it is a nostalgic reflection among older individuals about their past experiences with computing technology.

Areas of Agreement / Disagreement

Participants share personal anecdotes and experiences, but there is no consensus or disagreement on specific technical points, as the discussion is primarily reflective and historical in nature.

Contextual Notes

The discussion is limited to personal experiences and recollections, which may not encompass the full technical specifications or historical context of the systems mentioned.

Who May Find This Useful

Individuals interested in the history of computing, early computer technology, and personal narratives from those who experienced the evolution of computer systems firsthand.

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This was an advanced system at the time (1973), my first programming job. Multiple HP 2100 mini-computers (1 is HP 2116), each computer mult-tasking, a database server for 160 users at the time I left the company. Underneath each mini-computers is a 10 MB hard drive used to queue messages between computers, and ten 80 MB disk pack type disk drives. On top is a multiplexor for dedicated telephone lines and a paper tape photo reader (600 characters per second). I couldn't find the image for the other side of the room that had more stuff.

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I remember using the Wang 700 with nixie tube display for Lab work as undergrad. Almost turned me into a Computer Geek. Happily (for me) the physics force was stronger
 
I used a Wang 720C in 1972 that had a type ball printer that could be used as a plotter since the paper feed drum could move up or down. Wrote a cassette tape loader that would load a program via a number entered by the user. To minimize memory, it used a call to the routine that would do a load and execute that would repeat until a matching number was found, then return to a load and execute, so only using 2 instruction spaces for the call and the load and execute. In high school, we had a Monrobot (drum memory) in 1967, then an IBM 1130 (conventional mini-computer) in 1968 to 1970, plus Saturday sessions at an IBM data center in Los Angeles using low end IBM 360 mainframes. I also spent some time in 1969 and 1970 at a CDC data center, mostly 3150, and got to see a 6600 in action (it had a cool vector graphics monitor), got to run a couple of programs on the 6600 when there was an open time slot.
 
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It's come to this. A bunch of old guys talking about how they used their Wangs in the old days. <sigh>
 
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