Crash

A misstep by the TI-OS or an assembly program can cause the calculator to cease to function. A memory reset must then be forced to restore operations. On the 89 family, a crash is often accompanied by a black bar and a small error message such as "address error".

TI-89 Dummies

Quotable Quotes:

"The only dummies are those who do not make use of their Dummies books. They are all well written by knowledgable professionals who have a sense of humor."

"I think that these are great books and you should get it right now if you own a Graphing Calculator."