Manual / Guide · c. 1973
TI SR-10 Owner's Manual
Texas Instruments' owner's manual for the SR-10, its first slide-rule calculator.
Manual / Guide · c. 1973
Texas Instruments' owner's manual for the SR-10, its first slide-rule calculator.
Texas Instruments electronic side rule calculator SR-10 Texas Instruments electronic slide rule calculator SR-10 Fully Portable Versatile Easy to Operate Long Life Built in Rechargeable Batteries Extremely lightweight. Battery or AC operated. Performs addition, subtraction, multiplication and division including credit balance, reciprocals, squares, Square roots, chain and mixed calculations. Automatic conversion to scientific notation when calculated answer exceeds eight digits. Full floating decimal point. Operations are performed in the same order as with classical slide rules. For simple arithmetic operations, just touch the numbers and functions as you would write them on paper. Automatic clearing—no need to touch clear key between problems. Solid-state components, integrated circuits, and a display using light emitting diodes provide dependable operation and long life The SR-10 calculator comes complete with fast charge nickel-cadmium batteries which will provide 4-6 hours of operation without recharging under normal use. About 3 hours of recharging will restore full charge to the batteries. AC Adapier/ Charger Battery Saver Circuit Recharge or direct operation from standard outlets is easily accomplished with the AC Adapter/Charger included with your SR-10 calculator. Just plug the AC Adapter/Charger into a convenient outlet and the attached cord into the calculator. You can operate your calculator indefinitely while connected to your AC Adapter/Charger as your batteries cannot be overcharged. Do not attempt to operate calculator with charger plugged in unless batteries are in place. To save battery power your light emitting diode display turns off automatically approximately 15 seconds after the last keyboard entry, except for the first digit. If the display turns off while entering a problem, the display turns on automatically with the first keyboard entry. To bring back the last calculated result to the display, depress the [+) key. Therefore, the number in the first digit on the display is a double reminder—that you have an entry or calculation waiting in your calculator or that your calculator is in the power ON position. operational functions On/Off Switch [E] Key Key [=] Key Located on top surface of calculator on right side Clears (erases) information in calculator and display and sets calculator to zero for start of new problem, Clears the last number entered manually in the keyboard or the last calculated result, whichever is displayed. Instructs the calculator to ADD the following number to the previous number or result. Instructs the calculator to SUBTRACT the following number from the previous number or result. If there is no previous number, the calculator subtracts the following number from zero, which is the same as entering a negative number. To enter a negative number in the middle of a chain calculation, use the 8 key. Instructs the calculator to MULTIPLY the previous number or result by the following number. Instructs the calculator to DIVIDE the previous number or result by the following number. Instructs the calculator to complete the previously entered operations to provide the desired calculation result. Enters a DECIMAL point. Enters NUMBERS (limit 8 digit mantissa, 2 digit exponent). Instructs the calculator to find the reciprocal of the number displayed (that is to divide the number displayed into 1). Instructs the calculator to find the SQUARE of the number displayed (that is to multiply the number displayed by itself). Instructs the calculalor to find the SQUARE ROOT of the number displayed (that is to find the number which multiplied by itself, equals the number displayed), Instructs the calculator that the following number is to be entered as an EXPONENT of 10. To enter a number in scientific notation, first enter the mantissa, press «) and enter the desired exponent of 10. Key Power On Indication Minus Sign Decimal Point Calculation Overflow Instructs the calculator to change the sign of the mantissa or exponent appearing in the display. To enter a negative number, first enter the number and then press the % key. Using this “change sign” key prior to using the & key changes the sign of the mantissa. Ifthe % key is pressed after the ll key, the sign of the exponent is changed. A zero appears at the right of the 8 digit mantissa when power switch is on and no other numbers are displayed. Appears to the left of the 8 digit mantissa to indicate negative numbers, and appears on the left of the exponent (right of mantissa) to indicate negative exponents. Automatically appears to the right of any number entered unless positioned in another sequence by use of /:j key. A zero will precede the decimal tor fractional numbers. C appears on lett side of display to indicate a result larger than 9.9999999. x 1097 or smaller than 1.0000000 x 109°, operational examples Before Operation Calculator Operation The fast charge nickel-cadmium batteries furnished with your calculator were fully charged at the factory, but may require charging before initial battery operation due to shelf life discharging. You can operate your calculator while it’s being charged. Just plug the charger cord into the calculator and the charger into a convenient outlet. You can now calculate while you charge —a full charge requires only 3 hours when switch is off or 6 hours while in normal operation. It is recommended that you recharge the batteries periodically and that you refrain from running the power source to zero, as this type of operation may reduce the life of the batteries On some units, an L will appear on the extreme left of the display when the batteries are low and need recharging. Place switch in ON position. A zero will appear on the display. Performing calculations with the SR-10 calculator is easy. For simple operations, numbers and functions are entered in the same sequence as the mathematical expression is normally written. The following examples will help you. Scientific Notation Addition and Subtraction Any number can be entered into the SR-10 in scientific notation —that is, as a number multiplied by 10 raised to some power (exponent). For example, 1000 can be written as 1x 10%. ENTER 13 Very large and very small numbers must be entered in scientific notation. 110,000,000 is written as 1.1 x 108. ENTER 15188 In both these examples, the exponent indicates how many places the decimal should be moved to the right. If the exponent is a negative number, the decimal point should be moved to the left: 1.1 x 10° 8§= .000000011. The last two digits on the right side of the display are used to indicate exponents. For example 1.1 x 10-® is displayed. ENTER 1.16 88 (CITT By using scientific notation, you can retain eight significant digit accuracy even on numbers less than unity (1). If you use scientific notation, the results will remain in scientific notation until you press [c] EXAMPLE 4.23 + 4 = 8.23 OPERATION 45 23% 4 |) 8.23 EXAMPLE 6 — 1.854 = 4.146 OPERATION 65117 8541+! 4.146 EXAMPLE 12.32 -7+1.6=6.92 OPERATION 12013257510 68 6.92 Multiplication a EXAMPLE 27.2 x 18 = 489.6 MEA He ne OPERATION IVISION 271) 2 18 =) 489.6 EXAMPLE 12 = 5.2 = 2.3076923 OPERATION 12 715 = 2 -12.3076923 EXAMPLE (4 x 7.3) +2=14.6 OPERATION 47753412 714.6 J Anumber can be squared (multiplied by Squaring Numbers itself) simply by entering the number and pressing the key. EXAMPLE 42 =4 x 4=16 OPERATION 4) = 16 EXAMPLE 99999999? = 99,999,999 x 99,999,999 = 9,999,999,800,000,001 = 9.9999998 x 1015 OPERATION 99,999,999 =9.9999998 15 EXAMPLE (2.1 x 104)? =4.41 x 108 OPERATION 21:11 4 kl =4.41 08 Square Roots The square root of a number (the number that is #N ‘ multiplied by itself equals the number 12) umbers entered) can be found simply by entering the number and pressing the key: EXAMPLE V25 means find the value of a whenfx £= 25. In this casef#=5, so; V25=5 OPERATION 25 = 5 Reciprocals of Numbers EXAMPLE V3 = 1.7320508 OPERATION 3 = 1.7320508 EXAMPLE V1.1 x 108 = 1.0488088 x 104 OPERATION 1518 & =1.0488088 04 & appears when the square root of a negative number is taken, Since the square root of a negative number is imaginary, the overflow indication indicates the calculator recognizes an error, but performs the operation as though the number were positive. The reciprocal of a number (one divided by the number) can be found simply by entering the number and pressing the m key. EXAMPLE The reciprocal of 2 = % =0.5 OPERATION 2 ta =0.5 EXAMPLE The reciprocal of 100 = 100 = 0.01 OPERATION 100 * =0.01 EXAMPLE The reciprocal of 10° = 1.0 x 10 10 OPERATION 110% =1. -—10 EXAMPLE The reciprocal of 1.1 x 10-18 = 9.090900 x 1017 OPERATION 1°11 © 4 18 =9.090909 17 Mixed Calculations Mathematical operations can be performed in sequence with combinations of addition, subtraction, multiplication, division, squares, square roots and reciprocals. If a function key is pressed immediately after the |=] key, calculation continues using the displayed answer as the last entry. The calculator is cleared and made ready for another operation automatically when a number key is pressed immediately after the |=) key. It is not necessary to press the [¢] key before starting anew calculation. EXAMPLE (8.3 + 2) — 6.8 = 4.225 4 OPERATION 8H 3H 2464) 8 = -4.225 EXAMPLE 6 x 3 = 18 (automatic clearing) 3+8=0.375 OPERATION 6 © 3 [=] 18 (automatic clearing) 34 8! 0.375 EXAMPLE 4 x 5 = 20 and 20+ 8=2.5 (continuation of problem) OPERATION 4© 5) 20+8=25 1 MEE aay ee OPERATION 15 14-111 & % 0.1428571 1 EXAMPLE (STO EETO = 2.5584031 x 10'¢ OPERATION 104 @ 4124 @ 4104 «” 16 © 8 =2.5584031 16 a ; ‘ 126 Calculations with EXAMPLE (—°2+3) x (-4)=88 Positivednc, OPERATION Negative Numbers FF) 1125 4)5 3 214 o 88 ~1.6X 108)" NOTE: When the first number of a calculation is a negative number, the previous problem must be cleared manually by pressing the © key. (The [-] is a function key and will not automatically clear the calculator.) The calculator will ignore any mantissa digits Entry Overflow entered in excess of eight and will use the last two exponent digits entered as shown in the display. j Ifa calculation result is more than eight Calculation Overflow digits before the decimal, it is automatically converted to a scientific notation. Ifa calculation result is greater than 9.9999999 x 109°, the signal £ will be displayed with the answer. The answer shown will normally be correct, but only the /ast two digits of the exponent will be displayed. in case of difficulty 1) Check to be sure calculator is correctly plugged into a proper outlet that has power and that the AC adapter charger voltage switch is set on the correct voltage. 2) Check to be sure ON-OFF switch is in the ON position. A“ G " should appear in far right digit position of the 8 digit mantissa. 3) If display fails to light on battery operation, recharge batteries. 4) Review operating instructions to be certain calculations are performed correctly. If none of these corrects the difficulty, return the unit prepaid for repair to your nearest Texas Instruments Consumer Service Facility listed on following page. Please include information on your difficulty as well as return information of name, address, city, state and zip code, CAUTION: Use of other than the SR-10 AG Converter Charger may apply improper voltage to your SR-10 calculator and cause damage. specifications Type Display Decimal Point Types of Calculations Overflow Negative Sign Calculation Components Power Source AC Adapter/ Charger—Included SR-10. Light emitting diode display. Complete floating decimal on input and output. Addition, subtraction, multiplication and division. Credit balance. Chain and mixed calculations. Reciprocals. Squares. Square roots. Scientific notation. £ Sign on display indicates data calculation overflow. £ indicates negative calculation overflow. True value indication with minus sign on display. One MOSJLSI Integrated Circuit. The built-in rechargeable batteries provide four to six hours of service between recharges. Allows operation from 115 V, 60HZ or 230V, 50HZ AC source. SUIOVIVIUUUTUETETUTAEAEUEUUAEUEUAU The SR-10 electronic calculator from Texas Texas Instruments Instruments is warranted to the original electronic side rule calculator purchaser for a period of one year from the SR-10 original purchase date — under normal use and service against defective materials or workmanship. Defective parts will be repaired, adjusted, and/or replaced at no charge when the calculator is returned prepaid to a Texas Instruments Consumer Service Facility listed below. The warranty is void if the calculator has been visibly damaged by accident or misuse, or if the calculator has been serviced or modified Wea (ra fal by any person other than a Texas Instruments Consumer Service Facility. This warranty contains the entire obligation of Texas Instruments Incorporated and no other warranties expressed, implied, or statutory are given. The warranty is void unless the Purchase Registration Card has been properly completed and mailed to Texas Instruments Incorporated within 10 days of purchase. TEXAS INSTRUMENTS INCORPORATED DALLAS. TEXAS. Texas Instruments consumer services facilities For warranty or out of warranty service send your SR-10 calculator to the nearest service facility. Texas Instruments Service Facility Texas Instruments Service Facility P.O. Box 477 P.O. Box 970 Springfield, New Jersey 07081 Arlington Heights, Illinois 60006 Texas Instruments Service Facility Texas Instruments Service Facility P. O. Box 1967 P. O. Box 5012 M/S 10 Orange, California 92668 Dallas, Texas 75222 ADDENDUM SR-10 OWNERS MANUAL Use of the Key Additional Use — The key can be used to correct entry of an erroneous basic function key as well as an erroneous number entry. If a E] ora fF] key is pressed in error, the key can be used to clear the display to zero before pressing the correct function key. This method nullifies the error by adding or subtracting 0 from the previous calculation result. If an erroneous [X] or [=] key is pressed, the key can be used to clear the display before entering fy] and pressing the correct function key. In this case, the error is nullified by multiplying or dividing the previous calculation result by unity. Limitation — The key cannot be used to correct an erroneous number or function entry if the previous calculation result is negative or less than unity (exponent is negative). Use of the key alone will change the mantissa and/or exponent of the previous calculation result from negative to positive. Use of the [EE] Key Maximum Accuracy — The SR-10 was designed to give the user the option of having results in either conventional notation or scientific notation. Whenever the final or interim calculation results are between 1.0 and 0.0000001, maximum accuracy is obtained by using scientific notation. To convert to scientific notation, simply press the [EE] key immediately after any number entry. It isnot necessary to enter any values in scientific notation. Suggested uses for yournew SR-10 calculator... BUSINESS USES: engineering design budget planning purchasing inventory control quality control surveying expense accounts LASSROOM USES: engineering science mathematics statistics accounting BHOGGB02 O000000 HOME USES: balance your checkbook prepare tax statements vacation planning plan household budgets compare unit costs at store student homework calculate interest rates TEXAS INSTRUMENTS INCORPORATED DALLAS, TEXAS Dee e:b:.4 PRINTEDINU.S.A. CNSR-10-OM REV. A ©Copyright Texas Instruments Incorporated, 1973