User manual SHARP EL-530M

[. . . ] Do not carry the calculator in the back pocket of slacks or trousers. Do not subject the calculator to extreme temperatures. Do not drop it or apply excessive force. Do not use or store the calculator where fluids can splash onto it. [. . . ] : Indicates that a numerical value is stored in the independent memory. cos­10. 5 = tan­11 = 32 + 52 = 32 + 321 = / 32 + 3 @$ 21 = 8. 415778426 · Up to 10 key strokes, including "¬" and "/", can be used to enter a fraction. · Keep batteries out of the reach of children. · Exhausted batteries left in the calculator may leak and damage the calculator. · Explosion risk may be caused by incorrect handling. · Do not throw batteries into a fire as they may explode. Calculating with Fractions Fractions can be incorporated in an arithmetic calculation. "SIMP" symbol will appear with a calculation result if the answer can further be simplified. Refer to the following section of this manual for details. 1+1= ­­ 23 21 ­×­= 53 N1Ø2+1Ø3= 2Ø5*1Ø3= Now that you have learned how to reduce a fraction to its lowest denominator, you can start using your calculator to perform fraction calculations quickly and efficiently. 1+­= ­1 34 N1Ø3+1Ø4 1/3+1/4_ ªDENOM. ?SIMP 28/48 SIMP 28/48 =* 12_ = 4/12+3/12_ = 7/12 Calculation Ranges · Within the ranges specified below, this calculator is accurate to ±1 in the least significant digit of the mantissa. However, a calculation error increases in continuous calculations due to accumulation of each calculation error. (This is the same for yx, x¿ y, etc. where continuous calculations are performed internally. ) Additionally, a calculation error will accumulate and become larger in the vicinity of inflection points and singular points of functions. · Calculation range: ±10-99 ~ ±9. 999999999×1099 and 0. If the absolute value of an entry or a final or intermediate result of a calculation is less than 10­99, the value is considered to be 0 in calculations and in the display. Function sin x cos x tan x sin­1x cos­1x tan­1x x 5/6 2/15 Replacement Procedure 1. Loosen both screws and remove the battery cover. Replace the old batteries with new, with the positive (+) sides facing up. · Make sure that the display appears as shown. Otherwise, remove the batteries, reinstall, and check the display again. How to Simplify a Fraction Reducing to its simplest form If the result of pressing = is displayed with the "SIMP" symbol, the calculation can be reduced further. Use the ª key to set the factor of the fraction to simplify, either automatically or manually. [Automatic Simplification] 1 + -- = N 1 Ø 3 + 2 Ø 12 = SIMP 6/12 ­2 3 12 ªFACTOR?SIMP 6/12 SIMP 6/12 =*6_ = 1/2 * If = is pressed instead of a number entry, the least common denominator will automatically be displayed. [. . . ] Tämä laite täyttää direktiivin 89/336/EEC vaatimukset, jota on muutettu direktiivillä 93/68/ EEC. When to Replace the Batteries If the display has poor contrast or nothing appears on the display even when N is pressed, it is time to replace the batteries. Caution · Fluid from a leaking battery accidentally entering an eye could result in serious injury. Should this occur, wash with clean water and immediately consult a doctor. · Should fluid from a leaking battery come into contact with your skin or clothes, immediately wash with clean water. · If the product is not to be used for some time, to avoid damage to the unit from leaking batteries, remove them and store in a safe place. [. . . ]