Sharp EL-9900 User Manual
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Contents
Caring for Your Calculator ............................................................................................... 1
Chapter 1
Getting Started .............................................................................................................. 2
Before Use ...................................................................................................................... 2
Using the Hard Cover ..................................................................................................... 3
Part Names and Functions ............................................................................................. 4
Main Unit ................................................................................................................. 4
Reversible Keyboard ............................................................................................... 6
Basic Key Operations ..................................................................................................... 8
Changing the Keyboard .................................................................................................. 9
Quick Run-through: Basic Mode ................................................................................... 10
Chapter 2
Operating the Graphing Calculator ......................................................................... 13
Basic / Advanced Keyboard .......................................................................................... 13
Basic Key Operations - Standard Calculation Keys ..................................................... 13
1. Entering numbers ............................................................................................. 14
2. Performing standard math calculations ............................................................ 15
Cursor Basics ............................................................................................................... 15
Editing Entries .............................................................................................................. 17
Second Function Key .................................................................................................... 18
ALPHA Key ................................................................................................................... 19
Math Function Keys ...................................................................................................... 20
MATH, STAT, and PRGM Menu Keys ........................................................................... 23
SETUP Menu ................................................................................................................ 24
SETUP Menu Items ...................................................................................................... 25
Precedence of Calculations .......................................................................................... 27
Error Messages ............................................................................................................ 28
Resetting the Calculator ............................................................................................... 29
1. Using the reset switch ....................................................................................... 29
2. Selecting the RESET within the OPTION menu .............................................. 30
Chapter 3
Basic Calculations — Basic Keyboard .................................................................... 31
1. Try it! ........................................................................................................................ 31
2. Arithmetic Keys ....................................................................................................... 33
3. Calculations Using Various Function Keys ............................................................. 35
4. Calculations Using MATH Menu Items ................................................................... 42