Question:

need manual for T I 83 plus calculator?

Answers:

A-Best: Here it is in PDF format, direct from TI: http://education.ti.com/downloads/guidebooks/graphing/83p/83m$book-eng.pdf  

A: Here is the manual in a pdf file! http://www.math.oregonstate.edu/home/programs/undergrad/TI_Manuals/ti83Guidebook.pdf  

A: i went through hard work for this site but here it is: http://education.ti.com/downloads/guidebooks/graphing/83p/83m$book-eng.pdf