Instruction/ maintenance manual of the product FX-85B Casio
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fx-82SOLAR/ fx-260SOLAR fx-85B/fx-280 ENGLISH 1 ESPAÑOL 36 FRANÇAIS 73 DEUTSCH 110 ITALIANO 147.
— 1 — Contents Handling Precautions … 2 Modes … 3 Basic Calculations … 5 Constant Calculations … 6 Memory Calculations … 7 Fraction Calculations … 9 Percentage Calculations … 10 Scientific Function Calculations … 11 Statistical Calculations (SD Mode) … 18 T echnical Inf or mation … 21 CASIO ELECTRONICS CO.
— 2 — Handling Precautions •Y our calculator is made up of precision components . Nev er tr y to take it apart. •A vo id dropping y our calculator and otherwise subjecting it to strong impact. • Do not store the calculator or lea ve it in areas exposed to high temperature or humidity , or large amounts of dust.
— 3 — fully reread this man ual and ensure that the problem is not due to low battery po wer (fx-85B/fx-280) or operational error . • The contents of this man ual are subject to change without notice. •N o part of this manual ma y be reproduced in an y f orm without the e xpress wr itten consent of the manuf acturer .
— 4 — Note! •A mode guide is located at the top of the display screen. • DEG, RAD , and GRA modes can be used in combination with COMP and SD modes. • F9 does not exit SD mode . • F0 e xits SD mode. • F0 does not clear SCI or FIX specifications .
— 5 — Basic Calculations •U se the COMP mode f or basic calculations. • Example 1: 23 4.5 53 23 + 4.5 , 53 = • Example 2: 56 ( 12) ( 2.5) 56 - 12 E 2.5 E = • Example 3: 2 3 (1 10 20 ) 2 3 - 1 e 20 = • Example 4: 7 8 4 5=36 7 - 8 , 4 - 5 = • Example 5: =0.
— 6 — • Example 7: 4/3 π 5 3 4 3 - A x - 5 A N = Constant Calculations •P ress + , , , - or twice after inputting a number to mak e that number a constant. •“ K” is on the displa y while a constant is being used. •U se the COMP mode f or constant calculations.
— 7 — K 2.89 K 4.913 K 8.3521 • Example 4: 1.7 4 8.3521 (1.7 2 ) 1.7 - - = (1.7 3 ) = (1.7 4 ) = Memor y Calculations •U se the COMP mode for memory calculations. •U se A Y , | , A { and Z fo r m e mor y calculations. A Y replaces current memor y contents.
— 8 — • Example 3: To calculate the follo wing using memory and a constant: (12 3) (45 3) (78 3) 135. (12 3) 3 - - 12 = A Y (45 3) 45 A { (78 3) 78 | (Memor y recall) Z k Additional fx-85B/fx-280 Memory Calculations • The fx-85B/fx-280 has two additional memories named A and B .
— 9 — t 0 1 • Example 2: To store the results of 123 456 in memor y B . t 123 - 456 A J 2 t 0 2 Fraction Calculations •U se COMP mode f or fr action calculations .
— 10 — • Example 5: ↔ 0.5(Fraction ↔ Decimal) 1 C 2 = C C • Example 6: 1 ↔ 1 C 2 C 3 A B A B Pe r centage Calculations •U se COMP mode for percentage calculations . • Example 1: To calculate 12% of 1500. 1500 - 12 A v • Example 2: To calculate what percentage of 880 is 660.
— 11 — • Example 4: To discount 3500 by 25%. 3500 - 25 A v , • Example 5: To calculate the f ollowing using a constant. 12% of 1200 = 144 18% of 1200 = 216 23% of 1200 = 276 (12%) 1200 - - 12 A v (18%) 18 A v (23%) 23 A v Scientific Function Calculations •U se COMP mode f or scientific function calculations .
— 12 — • Example 2: 1°2’3” + 4.56 = 5.594166667 1 I 2 I 3 I + 4.56 = • Example 3: sin 87°65’43.21” = 0.999447513 (DEG mode) 87 I 65 I 43.
— 13 — • Example 2: cos 63°52’41” (DEG mode) 63 I 52 I 41 I W • Example 3: tan ( 35gra)(GRA mode) 35 E h • Example 4: cos –1 ( r ad) (RAD mode) 2 A L 2 = A V • Example 5: To c o n v e r t 45 degrees to r adians, g rads , and bac k to deg rees.
— 14 — k Hyperbolic/Inverse Hyperbolic Functions • Example 1: sinh 3.6 3.6 M S • Example 2: sinh 1 30 30 M A j k Common and Natural Logarithms, Exponents • Example 1: log 1.23 1.23 R • Example 2: In 90 ( log e 90) 90 T • Example 3: 64 R 4 R = • Example 4: 10 0.
— 15 — • Example 8: log sin 40° + log cos 35° (DEG mode) 40 S R + 35 W R = A Q • Example 9: 8 1/3 8 A s 3 = k Square Roots, Cube Roots, Squares, Reciprocals and Factorials • Example 1: 2 .
— 16 — • Example 5: 8! 8 A f k FIX, SCI, NORM, RND, RAN#, ENG Calculations • Example 1: 1.234 1.234, rounding result to two places (FIX 2). F 7 2 1.234 + 1.234 = • Example 2: 1.234 1.234, rounding input to tw o places. F 7 2 1.234 A b + 1.
— 17 — • Example 4: To con ver t 56,088 meters to kilometers . 56088 A J • Example 5: To conv er t 0.08125 gr ams to millig r ams . .08125 A J • Example 6: To generate a random n umber between 0.
— 18 — θ A N k Permutation • Example: To deter mine how many diff erent 4-digit values can be produced using the numbers 1 through 7. 7 A m 4 = k Combination • Example: To determine how many diff erent 4-member gr oups can be organiz ed in a group of 10 individuals.
— 19 — Input Data. A u 55 } 54 } 51 } 55 } 53 } } 54 } 52 } Sample standard de viatio n A q Population standard de viation A p Ar ithmetic mean A ` Number of data A r Sum of values A o Sum of squares of values A a • } } inputs the same data twice (as abov e).
— 20 — k Making Corrections During Data Input • Example 1: To change data y ou hav e just input. Correction Actual Correction 51 } 50 }A [ 51 } 130 - 31 } 130 - 31 } 120 - 120 - 31 t 130 - 31 } .
— 21 — Te c hnical Information k Keys and Their Functions • General Arithmetic calculations .......................... + , , , - , ............. , = Backspace ............................................ Q Clear(retains memor y) ...............
— 22 — Memory B store ..................................... A J 2 Memory M store .................................... A J 3 • Special Display/memory swap ........................... A N , A d Exponent ............................................
— 23 — Cube ..................................................... A N Cube root .............................................. A D Engineering ........................................... A J , A P Fa ctor ial ......................................
— 24 — • Statistics (SD Mode) Arithmetic mean .................................... A ` Data delete ............................................ A [ Data input .............................................. } Number of data ......................
— 25 — To switc h between NORM 1 and NORM 2 Press F 9 . There is no indication on the display of which fo rm at is currently in eff ect, but you can determine the setting by perf or ming the following calculation. 1 200 = NORM 1 format NORM 2 f ormat •A ll of the e xamples in this manual show calculation results using the NORM 1 f or mat.
— 26 — •I n a series of calculations, press k while an intermediate result is displayed to clear only the last calculation per- formed. •T o change the operator k ey ( + , , , - , , w , As , etc.) you just pressed, simply press the correct oper ator ke y .
— 27 — •I n the case of condition e , you could also press k . T h i s clears the intermediate result just pr ior to the o verflo w, so you can continue with the calculation from that point. •N o error occurs when the result is within the range of (1 10 99 )to (1 10 99 ).
— 28 — Important! Incorrect use of batteries can cause them to burst or leak, possib ly damaging the calculator . • Be sure to replace the battery at least once every three years, regardless of how much the calculator is used. Old batteries may leak, causing serious damage to the interior of the calculator .
— 29 — 5. Press t to turn power on. k Order of Operations and Levels Operations are performed in the following order of prec- edence. 1. Functions 2.
— 30 — k Formulas, Ranges, and Conventions The following are the formulas, ranges, and conventions that are applied to various calculations that can be perf ormed using this calculator . Coor dinate T ransformation •W ith polar coordinates, θ can be calculated within a r ange of –180° θ 180°.
— 31 — n ! ( n r )! n ! n !( n r )! Per m u t ation •I nput r ange: n r 0 ( n , r : integers) •F o r m u l a : n P r Combination •I nput r ange: n r 0 ( n , r : i.
— 32 — k Specifications Po wer Supply : fx-82SOLAR/fx-260SOLAR : Solar cell fx-85B/fx-280 : CASIO TW O-WA Y PO WER System: solar cell plus one G13 T ype (SR44 or LR44) batter y Batter y Life (fx-8.
— 33 — Functions Input Range x 1 1 10 –99 x 1 10 100 –1 10 100 x 100 –1 10 100 x 230.2585092 0 x 1 10 100 x 1 10 50 x 2.
— 34 — Functions Input Range x 0: –1 10 100 y log x 100 x 0: y 0 x 0: y n ; ( n is an integer) Howe ver : –1 10 100 y log x 100 To tal of integer, numer ator, and denominator must be 10 digits or less(including division marks).
— 35 — Operating T emperature: 0°C–40°C (32°F–104°F) Dimensions: fx-82SOLAR/fx-260SOLAR: 8(H) 66.5(W) 125(D) mm 5/16"(H) 2-5/8"(W) 4-15/16"(D) fx-85B/fx-280: 13.5(H) 73(W) 144.5(D) mm 1/2"(H) 2-7/8"(W) 5-5/8"(D) Wei ght: fx-82SOLAR/fx-260SOLAR: 47 g (1.
SA9709-C Printed in China Imprimé en Chine CASIO COMPUTER CO ., L TD . 6-2, Hon-machi 1-chome, Shibuya-ku, Tokyo 151-8543, Japan.
An important point after buying a device Casio FX-85B (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Casio FX-85B yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Casio FX-85B - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Casio FX-85B you will learn all the available features of the product, as well as information on its operation. The information that you get Casio FX-85B will certainly help you make a decision on the purchase.
If you already are a holder of Casio FX-85B, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Casio FX-85B.
However, one of the most important roles played by the user manual is to help in solving problems with Casio FX-85B. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Casio FX-85B along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
