Texas Instruments TI55 Calculator

Ti 55. MyCalcDB Calculator Texas Instruments TI55 II aka TI55II version 2 Advanced LCD slide rule calculations with programming and statistics It has 40 keys, and an LED (light-emitting diode) display typical of calculators of this era

1977 Texas Instruments TI55 Advanced Professional Calculator Etsy
1977 Texas Instruments TI55 Advanced Professional Calculator Etsy from www.etsy.com

The original TI-55 had only 32 programming steps but included 10 memory registers The built-in factorial function makes even complex factorial equations no match for this calculator's proven technology

1977 Texas Instruments TI55 Advanced Professional Calculator Etsy

It has 40 keys, and an LED (light-emitting diode) display typical of calculators of this era The TI-55 III is based off of the original TI-55 (1977) and TI-55 II (1981) Advanced LCD slide rule calculations with programming and statistics

Vintage Texas Instruments TI55 Pocket Electronic Programmable, LED. This was probably to preserve battery life, but I'll take a gorgeous display over longevity any day The built-in factorial function makes even complex factorial equations no match for this calculator's proven technology

Texas Instruments TI55II Constant Memory Scientific Pocket Etsy. Speaking of batteries, the TI-55 had its own rechargeable battery pack It has 40 keys, and an LED (light-emitting diode) display typical of calculators of this era