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HP Calculator Repair Service

        About 'Vintage Calculator Repair'

        I provide repair services of vintage Hewlett-Packard™ calculators. 
        I look forward to serving you, bringing your trusty HP™ calculator 
        back to full functionality. I have personally used HP™ calculators
        for most of my adult life. 

        Your satisfaction is important to me and I will do my best to 
        repair your calculator. Please contact me if you have any questions.

        About Me
	I grew up a short walk from the place where all of these calculators 
        were conceived and developed. Many of the people I grew up with were 
        part of the effort that made these devices possible.
	Family and friends were involved in a diverse range of jobs at the 
        Corvallis, Oregon Hewlett-Packard™ plant.
	One of my best friends for example worked in chip fabrication. Another 
        in the plant's machine shop. A cousin in inventory control. A best 
        friends son in law in fluid dynamics. To name a few.

	I did not work at HP™ a fact which could easily be described as a missed 
        opportunity. It would be very hard to argue with that.

        I have always had an interest in digital technology and the people I
        knew at HP™ were always helpful to me. And we had many great conversations
        about the present and future of the technology. They were always 
        enthusiastic about HP™ products and technology. I was often given
        salvaged items from HP™. I asked if this was approved by their superiors.
        I was told that it was and it was for one thing a source of feed back
        about their products as well as a possible source of new ideas. I know
        that HP™ did get new ideas by unconventional means at times. HP™ was a
        very innovative company and a great place to work. I probably should 
        have gone to work there.

	I was originally trained as a Tool and Die machinist. I actually have 
        very little training and experience in die making.  My background is 
        in tooling. I have a great deal of experience in tooling fabrication, 
        machining, analysis, trouble shooting and theory.  I have experience 
        operating horizontal and vertical milling machines, lathes, tool and 
        cutter grinders, surface grinders, cylindrical grinders as well as 
        honing and lapping machines.

	I am fully qualified in most inspection methods, layout, production 
        setup, etc.  I have experience in industrial trouble shooting for a 
        variety of diverse industries.

	I have personally elevated technology world wide in a few specialized 

	I spent 15 years working in this field and became poorer every year. 
        Of course if I had been willing to leave Oregon and gone to Boeing or 
        Lockheed I might have made some money.  I hear various pundits saying how 
        badly the US needs people with these rare skills. 
        I have a suggestion: PAY US.

	Enough about that.

	Then I got interested in digital electronics.  I studied that for a 
        while and learned quite a bit. Then I tried programming. I started 
        learning BASIC and Assembly.  I enjoyed it quite a bit and as I 
        progressed I developed a 'wish list' of features a programming language 
        should have. And then they released 'C'.

	BABY! 'C' had everything on my wish list and more! I bought an early 
        compiler and loved the new language. Some of my friends meanwhile had 
        gotten themselves PASCAL compilers and seemed to be similarly impressed.
	I remember asking them why they had not chosen 'C' instead. To a man I 
        got the same reply, "Too cryptic...".
	I just did not see anything 'cryptic' about 'C'..  'C' was awesome!
	I could usually do all of the stuff that everyone said that 'C' could 
        not do. No problem.  You could break ALL the rules. As long as you had 
        a thorough understanding of what the rules were, what they were for and 
        why they were there.

	It was easy to use. It was flexible. It was fast. It was intuitive. 
        It was low level. It was high level. It could build objects. By that 
        I mean WAY before there was anything actually called an object.

	I did a lot of hacking. Actually that started long before this but, 
        never mind. I got in to reverse engineering. Studied debugging a great deal.

	About ten years ago I got a job working for a great guy and a good friend, 
        Chip Westbrook. He grew up in eastern Oregon. Not central Oregon, 
        EASTERN Oregon! He grew up in the middle of some of the most desolate high
	desert wilderness in the US.  He became a surveyor and then a photogrammetrist. 
        He worked for the oil companies	in the far north of Canada. He did also sorts 
        of things. He was a very bright man. As down to Earth as a man could get. 
        And a damn good friend. You can read his life story in his book entitled, 
        'Against All Odds'. 
        It's well worth whatever it costs you believe me. And his widow gets 
        residuals from the sales and she's a nice lady. 

	He started up a photogrammetry service about 30 years ago and had quite 
        a few people working for him. They did some pretty big jobs. The built maps, 
        DEM databases, DTM databases, volumetric surveys, mass aerial surveys,
	geodetic surveys, cross sections and profiles and topographic and planimetric 
        mapping. And a whole lot more.

	Around that time I had gotten in to 3D modeling and ray tracing and other 
        rendering methods. I borrowed some of the DEM data sets they were generating. 
        These were like 1 meter DEM or something like that. Much higher resolution
	than the DEM sets most people had access to (7 meter? Not sure). I wrote 
        up some data conversion software. (A specialty of mine...) And started generating 
        'fly throughs' of fully rendered terrain from their DEM data.
	Now you have to understand they were doing big time contracts creating these 
        data sets yet at that time they had NEVER even seen a STILL IMAGE rendered from 
        their data! I invited them over and showed them some 'fly throughs'!

	After Chip saw that he asked if he could bring his programmer by to see them. 
        I said sure bring him by.  About a week later they both came by in the evening 
        after work. I made sure I had some nice new and better stuff to show them of course. 
        Heh.  So I'm showing them various examples and at a certain point Chip asks me, 
        'hey, can you render a quick sequence right there, but closer to the bottom of 
        that canyon?'. I said sure but it will take a little while. He said, 'okay'. 
        So I rendered what he asked me for.  When the video started to run he turned to his
	programmer, pointed at the screen, at the bottom of the canyon and said, and I quote, 
        'see that there, water running up hill, can't have that...'.

        Chip eventually accepted a very large contract from the United States government. 
        They screwed him royally and he ended up owing a LOT of money for his honesty and 
        long hard work. Which is not right. Morally I mean. But I digress. He had to shut 
        his company down. He started a new one and worked alone for years after that.

	I'm only going to do so much typing here so we will fast forward about 15 years. 
        Chip hired me to write a CAD program. A Windows application. A CAD program designed 
        specifically for mass 3D aerial surveys done by	photogrammetrics.  The program takes 
        a 3D data stream from a stereo plotter and generates a 3D CAD database. While I was 
        at it I built a mask programmable interface so that the program can generate a 3D CAD
	database from ANY 3D data stream.

	The program does all sorts of mapping and surveying related stuff. Way to numerous 
        to mention. But I will throw out a few high lights.

	     Contour generation from any sets of physical data points and objects the 
             user chooses to use. The user can set the minimum sample distance, the 
             contour interval, the contour index and the uniform grid interval.  
             The user can save the following entities from the contouring process:

	            The 3D Mesh

	            The Triangulation Grid

	            The Uniform Grid

	            The Non Uniform Grid

	            The Contour Mesh

	    It does various mass building analysis.

	    It automates many editing processes. This is because I discovered that building 
            really good editing functions are a lot of work and you are just reinventing 
            the wheel.  But AUTOMATING editing functions, well now that is worth the effort!

	If anyone is really interested contact me and I will gladly answer any 
        questions anyone has.

	I worked on this for 7 years. It was a GREAT JOB. I loved the work.

	Then one day, unexpectedly, my good friend and boss died.  So I lost a good friend 
        and my job at the same time.

	This was around the same time the head of the federal reserve called the heads 
        of all the major banks in for an emergency meeting regarding several of our investment 
        banks and some of their not so solvent conditions.

	So, finding work has proved, shall I say, problematic.

	So I started selling HP™ calculators on eBay.

	I had boxes of torn apart HP™ calculators that I had put away years ago.  
        I dug them out and started building them and selling parts for them.

	I've been doing that for about two years and I have gotten quite familiar with 
        several models.

	So I decided to set up this web site and offer repair and restoration of vintage 
        HP™ calculators.

        If you take a look in the 'Image Gallery' there are images of some HP™ calculators 
        that I have built in the last year or so.

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       Copyright ©2019 Vintage Calculator Repair, LLC;       Phone: 541-731-5130
       Last modified: February 19, 2019

       We are not affiliated in any way with Hewlett-Packard™. We are an independent service provider specializing in the repairs of vintage Hewlett-Packard calculators.
       The information contained herein is our own and does not in anyway reflect the policies of the Hewlett-Packard company.