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Owner's Manual
SCIENTIFIC
CALCULATOR
Please read before operating the unit
DS-700
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This Datexx DS-700 Scientific TABLE OF CONTENTS Calculator is designed for a variety of scientific, statistical and computer (LCD) Liquid Crystal Display Format .....4 uses. It provides many important Display Symbols .................4 functions necessary for complex cal- Setting Display Format............. . ....7 Operating the Calculator ...........9 culations. One Factor Operations...........21 Two Factor Operations...........21 FEATURES Correcting Incorrect Entries ......22 Correcting Overfl
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(LCD) LIQUID CRYSTAL DISPLAY FORMAT HYP Hyperbolic function designation symbol FLOATING POINT DISPLAY Appears when a hyperbolic function is designated. DEG Degree mode symbol Appears when degree mode is desig- SCIENTIFIC NOTATION DISPLAY nated or shows that the angular mode of the converted result is in degrees. RAD Radians mode symbol Appears when radian mode is desig- DISPLAY SYMBOLS nated or shows that the angular mode of the converted result is in radi- – Negative symbol ans. Indicates
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BIN Binary mode symbol SETTING UP DISPLAY FORMAT Appears when the binary mode is set or the displayed result is a binary Display Format number. Press TAB key to change format from floating point to scientific notion OCT Octal mode symbol Appears when the octal mode is set or Change to scientific notion the displayed result is an octal num- ber. HEX Hexadecimal mode symbol Appears when the hexadecimal mode Change to floating point is set or the displayed result is a hexa- decimal number. CPLX Com
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Example: Decimal Point 6 OPERATING THE CALCULATOR Power off key Press to turn off the calculator. Automatically turns off 8 min- utes after last keypress to con- serve battery power. Power on and clear / statisti- Please note: cal calculation mode key Once the decimal point is set, it will Press to turn on the calculator remain after power is off, to resume or to clear the display. decimal point 2 (default), Please set the decimal point to 2 again. Press to activate statistical program. The disp
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Degree / Radian / Grad Used with trigonometric func- selector / angular unit con- tions for arc hyperbolic calcu- version key lations. Use to calculate trigonometric and coordinate conversion. The Trigonometric / Inverse DRG key changes the angular Trigonometric function keys mode with each press: DEG -> RAD -> GRAD -> DEG. DEG MODE - Entries and Press for the desired trigono- results are in decimal degrees. metric function. Press 2ndF RAD MODE - Entries and first for inverse trigonometric resul
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Clear Entry / Factorial key Calculates the antilogarithm Press to clear the display of base e of the displayed num- an incorrect number. ber. Calculates the factorial of the Common logarithm / antilog- displayed number. arithm and hexadecimal number key Degree / Minutes / Second ƒ Press to obtain the base 10 Decimal degrees conversion logarithm of the displayed / Hexadecimal number key number. Converts degree / minute / Hexadecimal number F key second to decimal degree. (HEX mode only). Press
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Used during coordinate conver- Right Shift / Complex num- sions when entering the x coor- ber mode key dinate of the rectangular coordi- Press to delete the last num- nate (X, Y) or the r of the polar ber key pressed. coordinate. Also displays the calculated values of X or r. Press to set the complex num- ber mode. Press to convert polar coordi- nates to rectangular coordinates. Enter Exponent / Pi and Hexadecimal number key Press to enter a number in Imaginary number enter / scientific notation
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Calculates the Xth root of Y. Press to enter an open paren- thesis in the display. Square root / cube root and Press to exchange the dis- hexadecimal number key played number with the num- ber from the working register Calculates the square root of (x -> y) the displayed number. Hexadecimal number B key (HEX mode only). Close parenthesis / statisti- cal calculation key Calculates the cube root of the Press to enter a close paren- displayed number. thesis in the display. In statisti- cal mode it
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Number keys Plus / Decimal number key Press to enter number 0-9. Press for addition. Press to convert the displayed number to a decimal number Division / binary number key (base 10). Press for division. Memory-in / statistical calcula- tion key Press to convert the displayed Press to store the displayed num- number to a binary ber into memory. To clear the number(base 2). memory, press the ON/C key then the x-> m key. In statistical mode, Multiplication / Octal num- press to obtain the mean valu
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Memory plus / DATA CD key ONE FACTOR OPERATIONS One-Factor operations require the entry Press to add the displayed num- of only one mathematical function. The ber to the contents of the single factor is entered into the calcula- Memory. To subtract the displayed tion when you press the function key. You number from the memory, press do not have to press = to complete the the +/- key first. In statistical calculation. mode, press to enter data. In statistical mode, press to delete Some one-factor
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hierarchy first, press [ = ] to perform CORRECTING OVERFLOW ERRORS the higher hierarchy calculation, then If a calculated result exceeds the dis- enter the lower hierarchy calculation play ability or the memory capacity, to get an accurate result. the display stops and E appears in the display. Press [ ON/C ] to Example: (10 + 5 ) ÷ 3 = 5 resume calculating. Incorrect: 10 [+] 5 [÷] 3 = 11.6667 The range of calculated results and memory capacity are within the Correct: 10 [+] 5 [=] 15 range
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CONSTANT AND REPEAT SCIENTIFIC NOTATION When performing calculations, the Calculate last function and number entered are 20 20 retained as a constant. (72.5 x 10 = 1.75 x 10 ) -11 (-4.7 x 10 ) 32 Examples: = -1.57978 x 10 To To calculate 7 + 5 + 5 + 5 = 22 Calculate Press Display Press 7 [ + ] 5 [ = ] [ = ] 22 (72.5 x (72.5 [EXP] In this case [ + ] and 5 are the con- 20 10 20 [+] 7.25 21 stants. 1.75 x 1.75 [EXP] To calculate 2 + 3 = 5 and 4 + 3 = 7 20 10 ) 20 [=] 7.425 21 Press 2 [ +
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PERCENTAGE To calculate cos-1 0.5 = 66.666666 grads To Display Calculate Press Angular Press Display Mode 6% of 1250 1250 [X] 6 –1 GRAD 0.5 [2ndF] [cos ] =75 [2ndF][%][=] 75 6.666667 65 + 15% 65 [+] 15 =74.75 [2ndF][%][=] 74.75 To calculate tan π/5 = 0.72654253 129.95 – 10% 129.95 [–] 10 Angular =116.955 [2ndF][%][=] 116.955 Mode Press Display RAD [2ndF] [π] [÷] 5 [=] 0.62831853 LOGARITHM AND EXPONENTIAL [tan] 0.726542528 To Calculate Press Display log 0.02 0.02 [log] –1.698970004 To cal
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APPLICATIONS AND EXAMPLES CIVIL ENGINEERING BUSINESS Trigonometric Functions Calculate the future value of a $1000 invest- ment compounded annually at a rate of 6% for 7 years. FV = p (1+i )n = 1000 (1+0.06) 7 = 1503.63 Press Display x 1 [+] 0.06 [=] [y ] 7 [=] 1.503630259 [X] 1000 [=] 1503.630259 In this right triangle, A = 5.7 feet and a = 30 degrees. Determine the value of C. PHYSICS If a ball is thrown upwars with a velocity of 75 sin a = A/C feet per second, what is its velocity at the
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In another right triangle, ELECTRONICS A = 6 feet and C = 15 degrees. Determine the value of a, b and B. Amplifier Gain sin a = A /C sin a = 6 / 15 = 0.4 sin-1 .4 = 23.58 a = 23.58 degrees b = 90 - 23.58 = 66.42 degrees cos a = B / C cos 23.58 = B /15 B = cos 23.58 x 15 B = .92 x 15 = 13.75 feet Calculate the value of Av Voltage gain AV= 20 log Vo/ Vi = 20 log 3 -3 1x10 Angular =69.54242509dB Mode Press Display DEG 0 [X->M] 0 6 [÷] 6 Display Press 15 [=] 0.4 –1 3 [÷] [EXP] 3 [+/– ] 1
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PARALLEL RESISTANCE REPLACING THE BATTERIES This calculator is powered by two internal Three resistors are connected in par- batteries LR 44 or A76. If the display allel. Their values are 540 ohms, 470 gets dim or calculations slow down the ohms and 680 ohms. batteries should be replaced. Calculate the total equivalent resist- ance. To replace the batteries: Req = 1 1.Remove the six screws on the back of 1 + 1 + 1 the calculator and lift off the back cover. R1 R
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Datexx Limited Warranty This product is warranted against defects for 1 year from date of purchase. Within this period, we will replace or repair it, at our option, without charge for parts and labor, with the exception of accessories such as batteries, wallets, etc. Return the defective unit with proof of purchase and a check or money order for $5.00 (to cover postage, insur- ance and handling) to Teledex Service Center, 1 Atlas St., Kenilworth, NJ, 07033. This warranty does not cover products
