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®
EL-5230
EL-5250
PROGRAMMABLE SCIENTIFIC
CALCULATOR
OPERATION MANUAL
SHARP CORPORATION
04LGK (TINSE0796EHZZ)
PRINTED IN CHINA / IMPRIMÉ EN CHINE / IMPRESO EN CHINA
EL-5230/EL-5250 PROGRAMMABLE SCIENTIFIC CALCULATOR
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SHARP EL-5230/5250 Programmable Scientific Calculator Introduction Chapter 1: Before You Get Started Chapter 2: General Information Chapter 3: Scientific Calculations Chapter 4: Statistical Calculations Chapter 5: Equation Solvers Chapter 6: Complex Number Calculations Chapter 7: Programming Chapter 8: Application Examples Appendix 1
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Contents Introduction ...........................................................7 Operational Notes .................................................................................... 8 Key Notation in This Manual .................................................................... 9 Chapter 1: Before You Get Started .....................11 Preparing to Use the Calculator ............................................................ 11 Resetting the calculator ..................................
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Contents Setting the floating point numbers system in scientific notation ... 26 Using Memories ..................................................................................... 27 Using alphabetic characters .......................................................... 27 Using global variables .................................................................... 27 Using local variables ...................................................................... 28 Using variables in an equation or
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Contents Solver Function ...................................................................................... 52 Entering and solving an equation .................................................. 52 Changing the value of variables and editing an equation ............. 52 Solving an equation ....................................................................... 53 Important notes .............................................................................. 54 Simulation Calculation (ALGB) ..
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Contents Entering the PROG mode .............................................................. 75 Selecting the NORMAL program mode or the NBASE program mode ................................................................................ 75 Programming concept .................................................................... 75 Keys and display ............................................................................ 76 Creating a NEW Program ..............................................
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Contents Appendix ............................................................115 Battery Replacement ........................................................................... 115 Batteries used .............................................................................. 115 Notes on battery replacement ..................................................... 115 When to replace the batteries ...................................................... 115 Cautions ...................................
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Introduction Thank you for purchasing the SHARP Programmable Scientific Calculator Model EL-5230/5250. After reading this manual, store it in a convenient location for future reference. • Unless the model is specified, all text and other material appearing in this manual applies to both models (EL-5230 and EL-5250). • Either of the models described in this manual may not be available in some countries. • Screen examples shown in this manual may not look exactly the same as what is seen on the pr
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Introduction Operational Notes • Do not carry the calculator around in your back pocket, as it may break when you sit down. The display is made of glass and is particularly fragile. •Keep the calculator away from extreme heat such as on a car dashboard or near a heater, and avoid exposing it to excessively humid or dusty environments. • Since this product is not waterproof, do not use it or store it where fluids, for example water, can splash onto it. Raindrops, water spray, juice, coffee, steam
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Introduction Key Notation in This Manual In this manual, key operations are described as follows: x To specify e : @ "..................... To specify In : i To specify F : ; F ........................... To specify d/c : @ F..................... b To specify a /c: k To specify H : ; H........................... To specify i : Q .............................. Functions that are printed in orange above the key require @ to be pressed first before the key. When you specify the memory (pri
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Chapter 1 Before You Get Started Preparing to Use the Calculator Before using your calculator for the first time, you must reset it and adjust its contrast. Resetting the calculator 1. Press the RESET switch located on the back of the calculator with the tip of a ball- point pen or similar object. Do not use an object with a breakable or sharp tip. • If you do not see the message on the right, the battery may be installed zALL DATA CL?z incorrectly; refer to ‘Battery Replacement’ z YES¬[DEL] z
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Chapter 1: Before You Get Started The Hard Case Your calculator comes with a hard case to protect the keyboard and display when the calculator is not in use. Before using the calculator, remove the hard case and slide it onto the back as shown to avoid losing it. When you are not using the calculator, slide the hard case over the keyboard and display as shown. • Firmly slide the hard case all the way to the edge. • The quick reference card is located inside the hard case. • Remove the hard case
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Chapter 1: Before You Get Started Calculator Layout and Display Symbols Calculator layout 1 Display screen 2 Power ON/OFF and Clear key 3 Key operation 4 Cursor keys keys 1 Display screen: The calculator display consists of 14 × 3 line dot matrix display (5 × 7 dots per character) and a 2-digit exponent display per each line. 2 Power ON/OFF and Clear key: Turns calculator ON. To turn off the calculator, press @, then o. This key can also be used to clear the display. 3 Key operation keys: @: Act
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Chapter 1: Before You Get Started Display Symbol Dot matrix display Exponent Mantissa • During actual use, not all symbols are displayed at the same time. • Only the symbols required for the usage under instruction are shown in the display and calculation examples of this manual. Indicates some contents are hidden in the directions shown. : Press cursor keys to see the remaining (hidden) section. BUSY : Appears during the execution of a calculation. 2ndF : Appears when @ is pressed. xy/r θ : Ind
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Chapter 1: Before You Get Started Operating Modes This calculator has five operating modes to perform various operations. These modes are selected from the MODE key. Selecting a mode 1. Press b. The menu display appears. ƒNORMAL ⁄STAT Press d to display the next menu ¤PROG ‹EQN page. ›CPLX 2. Press 0 to select the NORMAL mode. NORMAL MODE • In the menu display, press the assigned 0. number to choose or recall a selection. What you can do in each mode NORMA
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Chapter 1: Before You Get Started A Quick Tour This section takes you on a quick tour covering the calculator’s simple arithmetic operations and also principal features like the solver function. Turning the calculator on and off 1. Press j at the top right of the keypad NORMAL MODE to turn the calculator on. 0. •To conserve the batteries, the calculator turns itself off automatically if it is not used for several minutes. 2. Press @ o to turn the calculator off. • Whenever you need t
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Chapter 1: Before You Get Started Editing an expression After obtaining an answer, you can go back to an expression and modify it using the cursor keys just as you can before the e is pressed. Example Return to the last expression and change it to 2 8 ÷ 3 – 7 × -10.5 1. Press d or r to return to the 8Œ©‰3-7˚–10.5= last expression. 110.4504172 • The cursor is now at the beginning of 8Œ©‰3-7˚–10.5 the expression (on ‘8’ in this case). • Pressing u or l after obtaining an answer returns the cur
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Chapter 1: Before You Get Started Using variables You can use 27 variables (A-Z and θ) in the NORMAL mode. A number stored as a variable can be recalled either by entering the variable name or using t. Example 1 3 Store 2 to variable R. 1. Press j 2 1 then x. NORMAL MODE •j clears the display. 0. • ALPHA appears automatically when you 2„Ò_ press x. You can now enter any alphabetic character or θ (written in blue above keys in the keypad). 3 2. Press R to store the result of 2 in R.
