calculator setting

please can someone show me how to set me TI-BA 2 calculator setting…in particular I want to set decimal + 4 places (for example… I want 1.2345 on the screen instead of 1.23 currently) .thanks a lot

It’s very easy. Here you go: http://education.ti.com/guidebooks/financial/baiiplus/BAIIPLUSGuidebook_EN.pdf