The Museum of HP Calculators Displays and describes HP calculators introduced from 1968 to 1986 plus a few later models. Sections on calculating machines and slide rules, an HP timeline, collecting information and a software library.
hpcalc.org Premier website for program that run on the HP48, HP38 and HP28 series of calculators Formerly known as hp48.ml.org
Texas Instruments TI's calculator division and the official site about TI calculators . Includes information about calculator models, computer linking software, and some math applications.
Calculators , Inc. Carries TI graphing calculators , CBL and CBR units, Vernier software, and educational calculator books.
Fryed Software Contains BASIC programs for nearly all TI calculators as well as information and screenshots for upcoming programs.
TI Online Store The official store for TI calculators and related merchandise.
Patrick Davidson's Web Site Original open source assembly games for all TI calculators , a message board, a FAQ, and links.
Region IV ESC Texas Instruments TI-83, TI-82, CBL, CBR, and Graphlink Tutorial Page Presents a tutorial for the use of the TI-82 and the TI-83 plus Texas Instruments graphing calculators . It also presents a tutorial for using Texas Instruments' CBL and CBR data collection devices as well as Texas Instruments' Graphlink computer interface.