EL-9900
• Power source: R03 (AAA) x 4 (Main),
CR2032 x 1 (Backup)
• Dimensions: 86 (W) x 183 (D) x 23 (H) mm
3-3/8” x 7-7/32” x 29/32”
• Weight: Approx. 240 g
Reversible
Keyboard
For Advanced Levels For Basic Levels
Easy-to-Use, Advanced Features
SCIENTIFIC CALCULATORS
• Reversible keyboard: basic & advanced
• Graphing capability
• Slide show feature
• Solver function
• Matrix function
for use at junior high school level
Advanced Keyboard Side
Basic Keyboard Side
Reversible Keyboard
The Reversible Keyboard gives you a 2-in-1 Graphing Calculator. Keys for basic functions are on one side, while keys for advanced functions are on the other.
Functions appearing on the menu display differ depending on which side of the keyboard is being used. The Reversible Keyboard saves you from having to get two
separate models for different levels.
for use at high school level
(includes all the functions of the Basic Keyboard)
Examples of Functions Examples of Functions
Graphs can be drawn in one of 4 modes: by rectangular
coordinates, by polar coordinates, by parameters, or by
sequences. The Split Screen makes it easy to analyse the
relationship between a graph and a table.
Includes a function for simplifying fractions. Finds common
divisor either automatically or manually, leading to more
effective learning.
Data can be easily input and revised in tabular form. You can
also draw a variety of graphs, such as statistical graphs (9
types) and regression graphs (14 types), which are useful for
analysing data.
Statistical graphs
• Histogram
• Broken line plot
• Normal probability plot
• Normal distribution plot
•Box plot/Modified box plot
• Pie chart
• Scatter diagram
• XY line
Regression graphs
• Linear regression (ax+b & a+bx)
• Quadratic/Cubic/Quartic
regression
• Natural/Common logarithm
regression
• Exponential regression/
Euler exponential regression
• Reciprocal regression
•Power regression
• Med-Med regression
• Logistic regression
• Sine regression
• Scientific Graphing •
• Statistics/Regression •
• Fraction Study •
Using a pie chart makes it easy to compare each part to the
whole. The data can be displayed either as raw numbers or as
percentages of the whole.
• Pie Chart •
Using the
key allows the user to calculate quotients and
remainders easily.
• Remainder Calculation •
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