EC-4037  (650-0805)               Features             Faxback Doc. # 3476

Your Radio Shack EC-4037 Programmable Graphic Scientific Calculator is one
of the most complete and compact calculators available.  It is designed to
help you solve problems in anything from basic math to trigonometry,
statistics, logarithms, and binary/octal/hexadecimal conversions.

The EC-4037's formula entry operating system lets you enter a calculation
exactly as you would write it down on paper.  It then judges which
operation to perform first, using standard algebraic logic.  You can then
use formula replay to correct your calculation or change it to use
different numbers without having to re-enter the complete calculation.

Its features include:

        Computation Mode (COMP) - for arithmetic and function
                                  calculations.

            Base-n Mode (BASE) - for logical math and conversions between
                                 base 2, 8, 10, and 16.

  Standard Deviation Mode (SD) - for single-variable statistical
                                 calculations.

Regression Analysis Mode (REG) - lets you quickly estimate an unknown
                                 constant occurring in relationship to
                                 several known variables.

             Matrix Mode (MAT) - for matrix operations with actual matrix
                                 format.

            Graph Mode (GRAPH) - lets you input functions and draw their
                                 graphs.

          Equation Mode (EQUA) - for solving quadratic equations, and
                                 simultaneous linear equations with two or
                                 three unknowns.

      Programmable Mode (PRGM) - for writing, editing, and executing
                                 programs.

              Link Mode (LINK) - for transferring program, function,
                                 matrix, and other memory data to another
                                 unit.

          Contrast Mode (CONT) - lets you adjust the display's contrast.

            Reset Mode (RESET) - lets you reset the calculator to its
                                 initial parameters.

      16-Character x 8
      Lines Dot-Matrix Display - shows the formula you enter as well as
                                 the calculation result.

                     Icon menu - identifies the available modes with easy-
                                 to-recognize icons.

             Graphic Functions - let you designate coordinate rank, trace,
                                 zoom, plot, line, and overwrite.

                  Programmable - lets you program up to 4,164 steps using
                                 28 memories, or 4 steps using 548
                                 memories.

            Calculus Functions - let you perform differential and integral
                                 calculus calculations.

               Replay Function - lets you recall on the display the last
                                 formula you executed for corrections or
                                 other editing.

   Engineering Symbol Notation - lets you calculate with unit symbols for
                                 kilo, Mega, Giga, milli, micro and so on.

             12-Digit Mantissa,
              2-Digit Exponent - provides one of the highest levels of
                                 accuracy available on a scientific
                                 calculator.

       Trigonometric Functions - let you perform sine, cosine, tangent,
                                 arcsine, arcosine, and arctangent
                                 functions using either degrees, radians,
                                 or gradients as the basic unit.

         Logarithmic Functions - provide quick access to log base-10 and
                                 natural logarithms (base-e).

         Probability Functions - let you quickly determine the number of
                                 permutations and combinations for a set.

           Rugged Plastic Case - helps protect your calculator from rough
                                 handling, making it ideal for the
                                 student, engineer, or business person on-
                                 the-go.

          Conversion Functions - let you convert fractions to decimal
                                 numbers, as well as polar-to-rectangular
                                 and rectangular-to-polar coordinates.

             Fraction Function - lets you input fractions without having
                                 to convert them to decimal values.

         Probability Functions - let you quickly determine the number of
                                 permutations and combinations for a set.

(ALL/ir-09/07/95)