website/content/museum/texas-instruments-ti-55-ii.md

title, categories, types, origins, years, params

title	categories	types	origins	years	params
Texas Instruments TI-55-II	Computers	Pocket	U.S.A.	1981	name image company company_name specs tabs adverts comments oc_id source TI-55-II /media/museum/photos/texas_ti55ii_system_1.jpg /companies/texas-instruments Texas Instruments label value NAME TI-55-II label value MANUFACTURER Texas Instruments label value TYPE Pocket label value ORIGIN U.S.A. label value YEAR September 1981 label value KEYBOARD 45 keys label value RAM 56 steps - 7 memories label value TEXT MODES 10 digits LCD display label value POWER SUPPLY Lithium batteries label value PRICE $50 adverts title subtitle text image U.S. ADVERT(1982) The calculator was sold with a very helpful manual (Calculator Decision-Making Sourcebook) giving step- by-step examples for the best techniques used for solving mathematical, statistical and scientific problems, as well as programming tips. /media/museum/pubs/texas_ti55ii_pub_1.jpg author date text Bill Plante Saturday 3rd November 2012 For over 18 years in engineering, my TI-55-II was my constant companion$ after 29 years, it''s still on my desktop. Just did a search of my library. I seem to have lost the Quick Reference Guide, but I''ve still got the green "SourceBook" with all the program keying instructions. author date text Bill Plante (USA) Saturday 3rd November 2012 WOW! Just saw your piece on the TI-55-II. Bought mine when they first came out (not the Brazil model). After all these years, it''s the one I use almost every day. It''s a little scuffed, but it works flawlessly and dependably! I change the batteries every 2-3 years. I even still have the case! author date text Keith (US) Sunday 27th June 2010 I bought one of these when my TI-55 died on me. The quality of this model was abysmal. The buttons were unreliable. It usually took multiple button presses to get them to work and when they did work, many times you would get multiple entries. About 13 years later I worked at TI and was talking to one of the engineers when the subject of the TI-55-II came up. When I told him I had owned one he asked me if it was any good. I told him that the buttons sucked. He sort of chuckled to himself. I guess they realized that it sucked as well. 597 url date https://web.archive.org/web/20230604171839/http://www.old-computers.com/museum/computer.asp?c=597 2023-06-04

The TI-55 was one of the first programmable calculator which keeps programs and data in memory, even when it was turned off.

112 pre-programmed functions, including statisticals.