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Performance characteristics of the DEC Type 30 graphical display

This might just be stating the obvious, but Type 30 manual linked in the question describes the device as a random-position point-plotting cathode ray tube. Nowhere does the manual suggest it's a ...
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13 votes

What are principles of vector CRT display? Simplest way to drive CRTs?

Vector and raster graphics pose different challenges. Raster displays require the ability to very quickly generate a stream of pixels at a continuous rate. Unless one is willing to place severe ...
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12 votes
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What was the DEC Type 30 vector graphics display used for?

In that era you couldn't afford to build the raster displays that we have now. The RAM for the frame buffer would have been far too expensive. Vector displays were common, even though they had ...
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9 votes
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What happened to IntelliFont (i.e. Amiga vector fonts)?

The need for IntelliFont (FAIS) format fonts kind of fizzled out, and Agfa concentrated on its industrial printing side from the late 1990s. Initially, Adobe wouldn't give a licence or open up their ...
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8 votes

What are principles of vector CRT display? Simplest way to drive CRTs?

This is really lots of questions, so a very general answer: If you want to know how retro vector displays worked, have a look e.g. at the Tektronix 4010, the Vector General, or the various vector ...
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8 votes

Performance characteristics of the DEC Type 30 graphical display

The description of the Spacewar game gives some clues that the Type 30 was not able to display lines, but instead dots. Towards the end of the description, there is the listing how the spaceships were ...
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6 votes
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Early vector computer displays: off-the-shelf oscilliscope, or custom built?

The PDP-1 Type 30 display, which is the 'canonical' display for the PDP-1, was a point-plotting display, not a vector display. It was a specific device, not a general-purpose oscilloscope. Link to ...
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6 votes

Early vector computer displays: off-the-shelf oscilliscope, or custom built?

The PDP-1 actually used a CRT that was designed for radar (see e.g. the Wikipedia entry). But the whole electronics around the CRT needed to drive the CRT and interface it with the PDP-1 was custom ...
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6 votes

Early vector computer displays: off-the-shelf oscilliscope, or custom built?

Well, I give you the SYM-1, as it could display text output on a user-supplied oscilloscope. Ray was just too much of an engineer to let that pass :) (*1) Beside that somewhat off beat example, I'd ...
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5 votes

Performance characteristics of the DEC Type 30 graphical display

NOTE: This actually refers to the type 340, not the type 30, so it may be irrelevant! The Type 30 input commands worked in several different "modes", including point mode, vector mode, and ...
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5 votes

What was the DEC Type 30 vector graphics display used for?

Just what was it used for? The answer is in the name - to display graphics It doesn't make much sense to produce a list of application, but lets look at the core issue of having a screen at all: ...
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5 votes

What are principles of vector CRT display? Simplest way to drive CRTs?

Expanding the existing answer by temlib is that most osciliscopes have some form of X/Y input and better ones support Z (intensity) This allows you to sidestep the complex signal drive problem to the ...
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4 votes

What are principles of vector CRT display? Simplest way to drive CRTs?

This gives me the idea of driving a CRT tube raw and naked right from the computer board (set). Perhaps all the high voltage stuff stays inside the monitor housing, but everything else would come ...
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4 votes

What are principles of vector CRT display? Simplest way to drive CRTs?

You can drive a vector display with a few DACs driven by a FPGA for timing and sequencing the patterns. For a cheap implementation, you can look at the old Vectrex game console which is well ...
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3 votes

What was the DEC Type 30 vector graphics display used for?

The PDP-1 was priced to be sold to a lab and was relatively easy to interface to. This means that it could be used for processing and displaying data from a variety of equipment such as mass ...
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2 votes

What are principles of vector CRT display? Simplest way to drive CRTs?

Another issue here: The main value of vector displays is they allow for a higher resolution than raster technology--but these days raster has gotten good enough that this is basically a non-issue. ...
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1 vote

What are principles of vector CRT display? Simplest way to drive CRTs?

Character generation can actually be done by partially analog style circuitry- and this has been done, for example to generate the on screen numeric readouts on Tektronix 5000/5400/7000 series ...
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1 vote

What are principles of vector CRT display? Simplest way to drive CRTs?

There was two main ways of doing this, exemplified by a storage display as used in the Tektronix 401x and the VS-11 type displays used by Digital. The 401x was an ASCII driven terminal and contained ...
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1 vote

What was the DEC Type 30 vector graphics display used for?

The PDP-1 was designed as an unofficial successor to the MIT Lincoln Labs TX-0, which also had a similar display. On the TX-0 this had been used for interactive debugging as well as graphical display ...
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1 vote

Modern vector display driver?

Trammell Hudson's V.st implements a USB to vector display driver using a Teensy 3.2 and some DACs. It looks like there are only available as single boards to build yourself.
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