Lightsaber Calculator Bubbles NEW DISCOVERY!!!

newmagrathea said:
Just pulled the tape off and took a couple closer photos of just the Exactra 20.

Edit: Mine says EX-20 on the back.

http://newmagrathea.com/forumimg/parts/IMG_3112.JPG

http://newmagrathea.com/forumimg/parts/IMG_3113.JPG
Click to expand...

Indeed looks all round ... another anomaly :wacko

teecrooz said:
All this calculator talk had me curious. Unfortunately mine were all at the bottom of my project box and I had to move all this other crap out of the way. Looks like the pcbs are all slightly different on all of mine. Different colors and different bubble shapes, with the dark blue being the perfectly round. Also the darker display screens.
Click to expand...

Indeed darker display = all round bubbles ... as it should be ... yet it's not always a rule of thumb apparently :wacko

Chaim
 
All of them say EX-20 on the back except the one with the darkest display. It says TI-20. I didn't notice until today.
 
TI-20 on the back ... and a serial nummer starting with 2000 . . . . on the 2 that I have with all round bubbles ... my precious :rolleyes

Chaim
 
teecrooz said:
All this calculator talk had me curious. Unfortunately mine were all at the bottom of my project box and I had to move all this other crap out of the way. Looks like the pcbs are all slightly different on all of mine. Different colors and different bubble shapes, with the dark blue being the perfectly round. Also the darker display screens.
Click to expand...

I'm drooling!! [emoji7][emoji7]


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teecrooz said:
All this calculator talk had me curious. Unfortunately mine were all at the bottom of my project box and I had to move all this other crap out of the way. Looks like the pcbs are all slightly different on all of mine. Different colors and different bubble shapes, with the dark blue being the perfectly round. Also the darker display screens.
Click to expand...

It's just not fair!!!
 
I'm mirin' that big b-hole MPP so hard. It's funny how it works, but when I first started in this hobby I thought any MPP would do and who cares about which b-hole you have :)facepalm). Now, after procuring an MPP of course, I stare at the small b-hole in disgust and haven't even bothered finishing up my Vader despite having all the parts just sitting there... the sickness is real!
 
veektohr said:
I'm mirin' that big b-hole MPP so hard. It's funny how it works, but when I first started in this hobby I thought any MPP would do and who cares about which b-hole you have :)facepalm). Now, after procuring an MPP of course, I stare at the small b-hole in disgust and haven't even bothered finishing up my Vader despite having all the parts just sitting there... the sickness is real!
Click to expand...

I haven't had anyone admire my b-hole before. I am flattered but my wife might have an issue with it.

Kidding and jest aside, thank you! It took me a while to track down. Back to admiring bubbles.
 
Last edited:
The 7 bubble strip was only used in TI calculators in '74 and '75 IIRC. If they had just used a 9 bubble strip I'd be swimming in good activation plates.

47478381667552-vi.jpg


49478381669811-vi.jpg


43478381663295-vi.jpg


45478381665414-vi.jpg
 
James Kenobi 1138 said:
The 7 bubble strip was only used in TI calculators in '74 and '75 IIRC. If they had just used a 9 bubble strip I'd be swimming in good activation plates.
Click to expand...

Bubbles galore!!! :)

veektohr said:
Now, after procuring an MPP of course, I stare at the small b-hole in disgust and haven't even bothered finishing up my Vader despite having all the parts just sitting there... the sickness is real!
Click to expand...

Just do it! Finish Vader's lightsaber and move along ... move along :confused

Chaim
 
From a $4 National Semiconductor 750.

I got it because I read it was only a 6 digit calculator, which means 7 bubbles. Hoping to discover an alt to the exactra... but alas it was 9.

That said, really cool edge card and a unique looking bubble piece.

750.jpg
 
SethS said:
From a $4 National Semiconductor 750.

I got it because I read it was only a 6 digit calculator, which means 7 bubbles. Hoping to discover an alt to the exactra... but alas it was 9.

That said, really cool edge card and a unique looking bubble piece.

http://sethmsherwood.com/pretty/750.jpg
Click to expand...

Yeah, at some point they must have just stopped spending the cash on different bubbles for the 6 digit calcs. Makes sense, from a business perspective I guess. Nine digit bubb's will work just fine for any model so just make more of those and get a better price point etc. BUT WHAT ABOUT OUR LIGHTSABERS????


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