display as in an artifact display. any really early system of large stature especally tube logic... had a se or ce living there and scope on cart was always seen... Sent from AOL Mobile Mail On Monday, December 10, 2018 devin davison <lyokoboy0 at gmail.com> wrote: The line about being used with an early computer as a display caught my eye. How would it be used as a display, what kind of graphics capability would it have? is there an interface for the thing for the pdp 11 or a modcomp? Those are the old systems i have on hand that i might be able to interface to it. Trying to find a good home for it. I just went through the back room and found another of a similar design, ill post back with that one too. I was not even aware i had two of them, quite odd when you can misplace/ miscount something so large. On Tue, Dec 11, 2018, 12:57 AM ED SHARPE via cctalk <cctalk at classiccmp.org> wrote: so many of these older scopes,are getting scrapped we have a few.. there was one made by tek. for example to be sold with TV broadcast gear we cherish here...gave a few others too.. but they do take up room....early scopes are good to display with early computers... in reality it was needed often as early comp. geAR had bad.? mtf !.. ed#....? get one... save one... Sent from AOL Mobile Mail On Monday, December 10, 2018 devin davison via cctalk <lyokoboy0 at gmail.com; cctalk at classiccmp.org> wrote: More of a computer list I know, but I need to clean out and this needs to go soon. Big ol tektronix scope on a cart. Was part of a community workshop, i cleared out all their equipment and have not had the time to repair it. I was planning to go over it and put it to work at my desk, but i decided to get a bigger desk and don't have the space for it. i picked up a hp logic analyzer that fits on the desk, and is more than capable for working on my pdp 11 and other minicomputer stuff. open to offers, come pick it up and its yours. https://i.postimg.cc/NFPC5cDG/scope-555.jpg located in Melbourne FL --Devin D.

I made such a setup in college: we had an 11/20 with AA11 (and other lab I/O gear). I hooked those up to the X/Y inputs of a scope, and a digital I/O line to the Z input. Then loaded coordinate pairs into a buffer on the RC11 disk, which was set up to do DMA directly to the AA11 data CSR. Worked nicely, and with low overhead on a machine that certainly could not afford to do refresh in software. The classic example of a computer display like that is the CDC 6000 mainframe console. That is essentially a pair of oversized oscilloscopes (with electrostatic deflection), with their X/Y inputs driven by a dedicated display controller that includes a vector character generator. paul

On 2018-12-11 9:15 AM, Paul Koning wrote: Curious what year that was, if you don't mind disclosing? Definitely a standout example. And Tektronix vector terminals were also a whole other category of sophistication. --Toby

I was doing something similar, on a PDP8/L driving a Tektronix scope with a camera attached, using code written in Focal - University of Washington, 1972. I learned a great deal about font generation, given that the code had to trace out each letter shape via X, Y coordinates... From: "cctalk" <cctalk at classiccmp.org> To: "Toby Thain" <toby at telegraphics.com.au> Cc: "cctalk" <cctalk at classiccmp.org> Sent: Tuesday, December 11, 2018 1:33:52 PM Subject: Re: BIG ol tektronix scope 555 - need it gone - make an offer 1974, at Lawrence University which had that 11/20 (with 8 kW of memory, DECtape, RC11, AA11, AD01, DR11, and ASR33) in the physics lab. paul