HP HP12C hp 12c_user's guide_English_E_HDPMBF12E44.pdf - Page 84

84 Section 7: Mathematics and Number-Alteration Functions Fractional. Pressing gT replaces the number in the display by its fractional portion - that is, it replaces all digits to the left of the decimal point by 0. Like Ñ, T changes the number inside the calculator as well as its displayed version. The original number can be recalled to the display by pressing gF. All of the above functions are used basically in the same way. For example, to find the reciprocal of 0.258: Keystrokes Display .258 y 0.258 3.88 Keys the number into the display. The reciprocal of 0.258, the original number. Any of the above functions can be done with a number in the display resulting from a previous calculation, as well as with a number you have just keyed in. Keystrokes fCLEARX fB fX gÑ gF gT Display 3875968992 Displays all 10 digits of the number inside the calculator. 3.88 Display returns to normal format when X key is released. 3.88 The number now in the display appears the same as before, but ... 3880000000 Displaying all 10 digits of the number inside the calculator shows B has changed the number to match its displayed version. 3.88 Display returns to normal format. 3.00 The integer portion of the number previously displayed. 3.88 Recalls the original number to the display. 0.88 The fractional portion of the number previously displayed. File name: hp 12c_user's guide_English_HDPMBF12E44 Printered Date: 2005/7/29 Page: 84 of 209 Dimension: 14.8 cm x 21 cm