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EL-509X
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Click each logo below for its explanation.
272 functionUpper: 12-Digit  Lower:10+2-DigitLast Answer
D.A.L.2-Line DisplayMulti-Line PlaybackConstant CalculationChain CalculationHard Case
3-Digit Punctuation2-Key Roll-OverPlastic Buttons

Power source: LR44 x 1
Dimensions: 80 (W) x 158 (D) x 14 (H) mm
3-5/32" x 6-7/32" x 9/16"
Weight: Approx. 91 g

[ Specifications ]
12 x 1
10 + 2
10 + 2
9
272
(without e)
(without logax)
6*2
LR44 x 1
(5,000 hrs.)*3
80 x 158 x 14 mm
3-5/32" x 6-7/32" x 9/16"
91 g

Availability and some specifications may vary according to region. Please refer to each country's website for detailed information.
Design and specifications are current as of July 2011, but are subject to change without prior notice.
*1 D.A.L. is the abbreviation for the Direct Algebraic Logic system.
*2 Linear: y = a + bx, Quadratic: y = a + bx + cx2, Exponential: y = aebx, Logarithmic: y = a + b ln x, Power: y = axb, Inverse: y = a + bx-1
*3 Continuous display. Actual battery life may vary depending on usage.



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