HP 33s - Manual (Page 4)

2 Contents
Periods and Commas in Numbers................................ 1–18
Number of Decimal Places ......................................... 1–19
SHOWing Full 12–Digit Precision................................ 1–20
Fractions........................................................................ 1–21
Entering Fractions...................................................... 1–21
Displaying Fractions .................................................. 1–23
Messages ...................................................................... 1–23
Calculator Memory ......................................................... 1–24
Checking Available Memory ...................................... 1–24
Clearing All of Memory ............................................. 1–24
2. RPN: The Automatic Memory Stack
What the Stack Is ............................................................. 2–1
The X and Y–Registers are in the Display ........................ 2–2
Clearing the X–Register................................................ 2–2
Reviewing the Stack..................................................... 2–3
Exchanging the X– and Y–Registers in the Stack .............. 2–4
Arithmetic – How the Stack Does It ...................................... 2–4
How ENTER Works ..................................................... 2–5
How CLEAR x Works ................................................... 2–6
The LAST X Register ........................................................... 2–7
Correcting Mistakes with LAST X.................................... 2–8
Reusing Numbers with LAST X....................................... 2–9
Chain Calculations in RPN mode ...................................... 2–11
Work from the Parentheses Out ................................... 2–11
Exercises.................................................................. 2–13
Order of Calculation ................................................. 2–13
More Exercises ......................................................... 2–14