ZOOM TI55II Prototype

Ti 55. TI55II This was probably to preserve battery life, but I'll take a gorgeous display over longevity any day The TI-55 is a programmable calculator first manufactured by Texas Instruments in 1977

Texas Instruments TI55II Constant Memory Scientific Pocket Etsy
Texas Instruments TI55II Constant Memory Scientific Pocket Etsy from www.etsy.com

TI-55 II Calculator, the second variant, with an LCD display Advanced LCD slide rule calculations with programming and statistics

Texas Instruments TI55II Constant Memory Scientific Pocket Etsy

Texas Instruments TI-55 Image: Joe Haupt, CC BY-SA 2.0 The built-in factorial function makes even complex factorial equations no match for this calculator's proven technology Later variants of the TI-55 used boring LCD displays

The Calculator Review Review TI55. Easy keyboard programmability; including function evaluation and integration features, saves time on repetitive problems The original TI-55 had only 32 programming steps but included 10 memory registers

Vintage Texas Instruments TI55 Pocket Electronic Programm… Flickr. The Texas Instruments TI-55 is a programmable calculator with 8 digits precision and algebraic logic Later variants of the TI-55 used boring LCD displays