Texas Instruments TI-2500-II Calculator - Retro Tech

Retro tech from the 70s.
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Texas Instruments TI-2500-II (Datamath II)

I found this at a garage sale in Ohio 2 years ago.

Early Calculator (Electronic Slide Rule)
Date Manufactured: 1974-1975
Price: $50
8 Digit LED Display
Power Supply: 2 AA Batteries (Nickel-Cadmium) 4-6 hours run time
5 Function: Add, Subtract, Multiple, Divide and Percentage
Other keys: Clear and a Clear Entry
Todays Worth: $25

Gear Obsession Links and Information

My YouTube Address
Fred Hart
P.O. Box 2156
Lusby, MD 20657

[theextremeanimator]

This calculator was the basis of the Engineer's PDA from TF2

[papabeanguy]

That thing is way older then me. Cool to see tech from back then. Glad to have you back!

[stefananderson]

Glad you're back Fred. Thanks for the video

[advan]

Looking forward to more retro tech. That stuff brings back the memories. I remember buying my first calculator back in 1977 for use in college. We couldn't use it in class, still had to use slide rules for physics and statistics, but they got a lot of use at home for homework.

[newrunner]

Love retro tech. Liked the way you worked in a Hitchhiker's Guide to the Galaxy quote.

[jnull]

It is great to see you again Chief. Hope you are feeling better

[CraigfromOmaha]

I inherited one of these calculators when a grandmother died. No box and slightly roughed up, but it still works!

Nice retro movie camera, BTW.

[FrancoisTX]

Nice video, incredible how fast technology went.

[TravisTLK]

FRED!!! You're reviewing stuff you're genuinely interested in and having fun doing it. We can tell. Makes that vid that much better. Welcome back!

[rodscrivner]

Fred is back! I am so glad to see your return..

[anthonymiller]

Good to see you back again. Love the retro series as well as your past work. Not sure why I did not before, but I did subscribe now. Looking forward to seeing more reviews

[taylorschlichmister]

Keep up these vids I'm glad to see you back on YouTube

[TonyFleming]

Too cool. Wish I had kept my aunt's old slide rule pencil case.

[Gamileg]

Welcome back Fred. Missed you man. I like the retro angle.

[CrownVick]

Good to see you!
I enjoyed this video.

[andrewsmactips]

I love the way the keys clicked on those old Texas instrument calculators. All calculator keys nowadays just sort of mush.

[surfitli]

I remember my parents having a Sharp Calculator from late 1970s or early 1980s. Had a green LED display and used 4 AA batteries.
ThT Pentax is nice. The parents still have a working Canon AE-1

[robertjohnson]

Back when electronics were simple lol great vid!

[chukzombi]

the battery on the meter can easily exceed the cost of the camera. i had an old bell & Howell. it was great fun.

[notfastuc]

So..Fred ..I am sure there is no link to Amazon on this one lol