Helping LGR to restore a vintage Sanyo ICC-0082 calculator

LGR asked for help rescuing a gorgeous Dictaphone 1680 calculator, née Sanyo ICC-0082. We are happy to oblige. And while we are at it, Ken reverse engineers the enigmatic Sanyo chipset that makes it tick.

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[LGR]

Thank you so much for offering to help with this! It's just wonderful seeing such a lovely piece of tech functional again. You guys are awesome 👍

[RickBaconsAdventures]

I'm so happy he sent it to you guys! Marc and the team are the most professional and qualified around. Some folks were advising he send it to an amateur and I was worried. LGR is great

[stephendavies]

I know that I understand some electronics, having worked in the field many years ago, but Master Ken is a Sensei! It is always a wonder to watch him work. Thank you for both your content and managing to get such a great team of honest, humble and knowledgeable people together.

[Derpy]

Apollo engineers repair calculator during lunch break.

[kevinreardon]

I inherited my Uncle's Ampex tape player (tube based) but all it did was buzzed. I learned tubes way back in Junior High, but not well enough to understand the diagram. About 30 years later, I took a leap of faith and replaced the power circuitry. I had to replace two of the tubes with Russian tubes, which no doubt made my Uncle roll over in his grave (he used the player to record the concerts he did for the Admiral during diplomatic assignments). Well, with that guesswork, it now works. A lot of "standards" changed, like in the audio plugs, but a few adapters and all is OK. I gain a lot of comfort seeing you applying the same intelligent guesses and reasoning I did. Growing up in the 60's, with a "shop" teacher who hated my mother, I managed to learn enough about electronics to enjoy this channel. It relieves me to know I really do understand the Electronics of the Ancients <grin>.

[JPBennett]

We need to see that calculation in slow motion. Would be interesting to see what those tubes are actually doing during the number crunching.

[TechGorilla]

I'm going to have to say that this is something I couldn't ever have imagined would happen. Supreme!

[thelegalsystem]

I never expected a delay-line memory system to show up in a calculator like this

[Zerbey]

When two of my favorite channels work together you know it's going to be a good day!

[Sir_Uncle_Ned]

As soon as I saw the title, I knew this thing was in safe hands. Glad you guys were able to get it back to full health.

[Brainwizard.]

I just love Ken. He does a such phenomenal work in restoring every piece. Logic piece of our human minds barehand creation. From his kittle, explaination, blog, career and calmness. I really hope i can be someone like him one day!
Thank you for the interview as well, Marc!
Edit: + Every assistant and producer here!

[vincentlextrait]

There is an interesting earlier version of the ICC-0082 with true nixie tubes! I have two of these, and they work!

[rsmrsm]

Reverse engineering the talents hidden in old technologies, I see, is not an easy task.
You are very good!
Congratulations.

[unebonnevie]

I've enjoyed watching Ken and Marc in action! They are such smart guys!

[BOBXFILESa]

Back in 1980, I was working at a company. One of my co-workers told me that her father's boss had bought one of the first hand-held calculators. (I think later than this, with the little red LED numbers). It cost $600.00, and they all went over to the Boss's house to see it!
Thanks for helping out LGR!

[elsaarmstrong-zpng]

I used to repair calculators way back in 60’s-70’s and a good test calculation was 22/7 = Pi or 3.142857 ! Of course all the keys/functions were also tested! There were many makes but Sharps had a huge range! The early models had 14 logic boards all with discrete components! Fault finding was single step mode and checking flip-flops which made up registers for + - etc. X was repeat addition, division was repeating subtraction. Fault finding was to component level (chips were in research at that time) and logic boards cost a fortune! Fraser

[w.p.]

Marc & Team this was fantastic! Also glad to see the Collab with LGR, another great channel! Also want to say it is great that your team is so knowledgeable about older technology - you know the saying, if we forget the past, we are doomed to repeat it. Old ideas still are relevant to new inventions and discoveries.

[Dudley]

Thanks, Marc & Company! Nice to see that lovely seven segment display. That glowing orange presentation is familiar to pilots of a certain age; the famous Bendix King KX-155 nav/comm (among others) used a later gas discharge module for numeric frequency display. The modules are no longer available, and gradually the fine old radios are being phased out as their displays conk out.

[kei_otake]

LGR, CuriousMarc, and now Adam Savage with that Ghosbusters gizmo - it’s like Infinity War but for my nerdy YouTube channels

[pilznille]

LGR in collaboration with CuriousMarc. Two of my most liked vintage computing channels here on YouTube. Very nice to see such a beautiful piece of tech here.