Sci-Plus 300 User manual
Contents
1. Nx gives 12 Calculates the specified root x of the displayed number y Example 125 2 YPNy 3 gives 5 Key LOG LN 29 e Key 29 10 2 9 FIX Function Calculates the common logarithm to the base 10 of the displayed number Example 1000 LOG gives 3 Calculates the natural logarithm to base e of the displayed number Example 3 LN gives 1 0986122 Calculates the natural antilogarithm to base e of the displayed number Example 4 2 9 e gives 54 598150 Function Calculates the common antilogarithm of the displayed number 10 raised to the power of the number Example 2 2 10 gives 100 Sets the number of decimal places that the calculator will display Example 2 FIX 3 sets the calculator to display 3 decimal places 2 FIX 0 reverts to normal display Key Function n Adds n to the displayed number Example 11 10 gives 12 1 n Subtracts n from the displayed number Example 11 10 gives 9 9 x n Multiplies the displayed number by n Example 11 x 10 gives 1 1 n Divides the displayed number by n Example 11 10 gives 110 20 Fraction calculations Fractions are entered in the format Number Ab c numerator Ab c denominator and displayed as A_b_ c Example to add 1 1 8 2 1 16 3 3 16 Enter 1 Ab c 1 Ab c 8 2 Ab c 1 Ab c 162. Example to subtract 1 1 8 from 2 1 16 15 16 Enter 2 Ab c 1 Ab c 16 1 Ab c 1 Ab c 8 To convert fractions to a decimal enter number then Example 15 Ab c 16 0 9375 21 Using the memory The calculator s memory can store data as long as the calculator is turned on You can store a number in memory for repeated use in a calculation or to keep a running total Key STO Key RCL SUM Function Stores the displayed number in memory re placing any previously stored number Example 15 STO x 2 gives 30 and stores 15 in memory indicated by M in display 22 Function Recalls and displays the number that is in memory Does not change or clear memory Example RCL 4 gives 19 15 remains stored in memory as indicated by M in display Adds the displayed number to the current number in memory Adjusts number in memory without affecting the displayed number or any calculations in progress Example 4 SUM displays M 4 RCL displays M 19 23 Key Function EXC Swaps the number in memory with the displayed number The displayed number is stored and the previously stored number is displayed Assuming that 19 now is stored in memory Example 2 x 6 gives M 12 EXC displaysM 19 EXC displays M 12 Note Pressing 0 1 will not clear the memory Pressing zero 0 then STO or power off 27 O I then on 0 1 will clear memory 24 Con
3. When using scientific notation numbers are expressed as a mantissa multiplied by 10 to an exponential power exponent Entering a Number in Scientific Notation Enter the mantissa If it is negative use the key to change the sign Press EE Two zeros will appear on the right side of the display Enter the numerical exponent one or two digits If the exponent is negative use the key to change the sign If you make a mistake entering the exponent simply re enter the correct digits For example 2 567x10 is entered as 2 567 EE 6 and is displayed as 2 567 06 To revert to decimal press EE again Converting a Number to Scientific Notation To convert any displayed number from standard display format to scientific notation press EE followed by Correcting Entry Errors At any point during a calculation you can press O I to clear all calculations including any erroneous entries and start all over You can also use the key to delete single digit entries Clearing an Error Condition The display shows E whenever an error overflow or underflow occurs or an improper operation attempted No further key commands will be accepted until the error condition is cleared Pressing 0 1 clears the error and all pending operations Order of Calculations The Sci Plus 300 Scientific Calculator completes operations in accordance with the following order of priority 1 Single variable f
4. standard deviation for the entered data n 1 weighting 2 I on x Calculates the variance using n weighting for the population data 37 Key 2 I on 1 x 2 2x 2 CSR Function Calculates the variance using n 1 weighting for the sample data Calculates the sum of the entered data points Clears all data points from the statistics register and the STAT indicator 38 Example Analyse the following test scores 88 72 56 77 91 Assume that these five students are the entire population Action Keystrokes Display Clear display 1 0 0 Clear statistics register 2 CSR 0 1 entry 88 D 1 2 entry 72 gt 4 2 3 entry 56 D 3 4 entry 77 4 5 entry 91 D 5 39 Class average mean 27 x 76 8 Standard deviation 2 on 12 512394 Sum of scores 2 H x 384 Variance 2 on x7 156 56 Important After completing any statistical calculation remember to press 2 MICSR to clear the statistics register and return to arithmetic calculations 40 Warranty and Service Your new Sci Plus 300 Scientific Calculator has been built by Sight Enhancement Systems to provide years of reliable service If your calculator should cause problems for any reason please contact us by Tel 519 883 8400 or Fax 519 883 8405 or by Email to service sightenhancement com 41 Once a fault has been confirmed we will provide a Return Material Authorization RMA number a
5. ad 33 333333 28 Trigonometric Functions Key Function SIN COS Calculates the sine cosine or tangent of TAN the displayed angle Example 45 SIN 0 7071067 2 MISIN Calculates the arcsine arccosine or 2 COS arctangent of the displayed angle value 2 TAN Examples 0 5 2 SIN gives D 30 0 2 H COS gives D 90 1 0 2 NITAN gives D 45 29 Degree Format Conversion An angle measured in degrees minutes and seconds DMS must be converted to decimal degrees DD before it can be used in a calculation Degrees Minutes and Seconds DMS DMS angles are entered in D MMSSsss format D Degrees O to 8 digits Decimal point separator 30 MM Minutes must be two digits SS Seconds must be 2 digits SSS Fractional part of second Example 52 2 16 75 is entered as 52 021675 31 Decimal Degrees DD DD angles are entered in a D ddddddd format D Degrees Decimal point separator ddddddd Fractional part of a degree Example 28 775 is entered as 28 775 32 Converting Angles The Sci Plus 300 calculator converts angle measurements from DMS to DD by pressing 2 gt DD and DD to DMS by 2 gt DMS Note gt DMS is the 2 function of key Example Convert 26 5 12 2 to decimal degree DD format and then back to degree minute seconds DMS format Format Keystrokes Display DMS format Enter 26 05122 26 05122 DD forma
6. ay mode To select speech mode press 2 followed by The calculator will now speak all keystrokes and the results on the display The volume can be controlled by pressing the up and down arrow buttons to the right of the display The calculator will read the display at any time by pressing as long as it is in soeech mode To reset to display mode press 2 or turn the calculator OFF and then ON The Display A maximum of eight digits can be shown on the display Any additional digits entered will be ignored The calculator display has been manufactured to provide the highest contrast for viewing in normal room lighting To obtain the best clarity it should be viewed at a slight angle The display also provides status indicators as described in the following table Indicator 2nd De R G Indicator y STAT GG K E Meaning The displayed number has a negative value The 2 key has been pressed The next key that is pressed will perform the function in yellow text on the key Angle units are set to degrees Angle units are set to radians Angle units are set to grads Meaning One or more parentheses are open The calculator is in its statistics mode and the statistics register contains data A number and operation are stored as a constant A number is stored in the memory An error has occurred Press O I to reset Scientific Notation
7. calculator starts in display mode with all memory cleared the angle units set to degrees and the display shows 0 To turn the calculator off press the 2 Followed by O I key After power down all memory is cleared Key Function 0 1 Turns calculator on Clears memory and display Resets angle units to degrees When pressed once during a calculation but before an operation key clears the display entry and any error condition E A new entry can be made and calculation can proceed Pressing 0 1 does not clear the memory or the statistics register Key Function 2 9 Instructs calculator to perform the second 2 9 function of the next key that is pressed the function in yellow text on the key lt Backspace key deletes one entry at a time It can be used to clear an entire entry by repeated delete actions Speech Output For the calculator to operate in speech mode a headset earphone or amplified soeaker must be plugged into the earphone socket on the right side of the calculator and speech mode selected The headset or earphone requires a 3 5 mm diameter audio jack should have 32 ohm impedance and no more than 100 mWatts power An amplified external speaker can also be used the type used for portable sound players is ideal If you are unsure of the correct device to use please contact Sight enhancement systems for advice Selecting speech mode On start up the calculator is set to displ
8. gevies 300 qt PAUS talking scientific calculator Owner s manual How to perform scientific statistical and trignometric calculations with your Sci Plus calculator The Sci Plus 300 Scientific Calculator allows you to perform a wide range of mathematical trigonometric and statistical calculations This manual describes how to perform these operations select soeech options and care for your calculator Battery and charging information The internal lithium lon battery in your calculator will normally provide operation for more than 80 hours but must be recharged when BAT LO is displayed It is also recommended that the battery be recharged if an extended period of storage is expected Plug the charger into an outlet and insert the jack into the charge socket on the left side of the calculator A full charge will take 8 10 hours After long periods of storage 6 8 months the battery may become fully discharged and the calculator will remain inoperative until the battery has recovered normal operating voltage If the calculator does not function after charging it must be returned to an authorized service centre for the battery to be replaced Alternate wall adapter plugs can be provided for most countries please contact Sight Enhancement Systems if you need a different plug for your country Basic Operations Turning the Calculator On and Off To turn the calculator on press the 0 1 key The
9. nd the procedure for repair We will require the serial number from the label on the base of the calculator and a brief description of the problem It is important that you do not return the calculator to the factory without a Return Authorization 42 sight enhancement q systems 60 Bathurst Drive Unit 17 Waterloo Ontario Canada N2V 2A9 Tel 519 883 8400 Fax 519 883 8405 www sightenhancement com
10. stant Calculations The constant key K simplifies repetitive calculations by storing a number and its associated operation for repeated use To enter a constant operation 1 Enter the repetitive number p 2 Press the operation key that is required 3 Press K 25 Key Function p K Adds p to each subsequent entry p K Subtracts p from each subsequent entry p x K Multiplies each subsequent entry by p p K Divides each subsequent entry by p ply I K Raises each subsequent entry to power p p 2 YPNyIIK Takes root p of each subsequent entry 26 After storing the constant K you can complete each new repeated calculation by simply entering the new number and pressing To erase the constant clear the calculator or enter any of the above arithmetic keys Setting Angles Before starting any trigonometric calculation use the DRG key to select the appropriate angle units D indicates degree units R indicates radian units and G indicates grad units 1 100th of a right angle 27 Key Function DRG Sequentially changes the angle units as noted on the display D R or G However does not affect the displayed angle value 2 9 DRG Changes the angle unit setting and converts the displayed value to its equivalent value for the new units Example 30 D degrees 30 2 9 DRG gives R radians 0 5235987 2 DRG gives G Gr
11. t Enter 2 9 gt DD 26 086722 DMS format Enter 2 gt DMS 26 05122 33 Rectangular to Polar Conversions Pressing 2 MIR gt P converts rectangular coordinates x y to polar coordinates 1 0 Example Convert the rectangular coordinates 10 8 to polar coordinates Sequence Keystroke Display Enterxandy 10 2 x y 8 8 Value of 6 2 R gt PJ 12 806248 Value of r 2 I x y 38 659808 Value of 6 2 I x y 12 806248 To alternate between the two converted values r and 8 press 2 x gt y repeatedly 34 Polar to Rectangular Conversions Pressing 2 IP gt R converts polar coordinates r 6 to rectangular coordinates x y Example Convert the polar coordinates 5 30 to rectangular coordinates Sequence Keystroke Display Enterrand 5 2 x y 30 30 Value of y 2 MIP gt R 4 330127 Value of x 2 Ixy 2 5 Value of y 2 I xy 4 330127 To alternate between the two converted values x and y press 2 x gt y repeatedly 35 Statistical Functions The Sci Plus 300 can perform statistical analysis on one variable data Key Function D Enters the displayed number as a data point in the statistics register 2 9 gt Removes the displayed number from the statistics register 36 Key Function 2 9 x Calculates the mean of the entered data set 2 I on Calculates the standard deviation for the entered data n weighting 2 I on 1 Calculates the sample
12. unctions including trigonometric logarithmic square square root factorial percent reciprocal angle conversion and sign change 2 Two variable functions including exponential y and roots Ny multiplication and division addition and subtraction 3 Pressing completes all operations Basic Functions Key x Key 2 x x e Function Perform addition subtraction multiplication and division Example 13 x 2 4 gives 30 Example 9 3 1 gives 2 Completes all pending operations Changes the sign positive or negative Example 6 8 gives 2 Function Enters the value 7 Calculates the factorial of the number Example 6 x gives 720 Converts the displayed number to a percentage Example 656 gives 6 56 Calculates the square of the displayed number Example 13 x gives 169 15 y 0 D Key 1 x 2 vx 2 Pvy Function Raises the displayed number y to the power x Example 7 y 3 gives 343 Operations in parentheses are given priority over operations outside parentheses Up to 3 levels of parentheses can be entered Pressing closes any open parenthetical expressions Example 20 2 3 gives 4 Function Calculates the reciprocal of the number Example 8 1 x gives 0 125 Calculates the square root of the the displayed number Example 144 2
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