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Gordon, Sheldon P.; Gordon, Florence S. – Creative Computing, 1984
Discusses properties of epicycloids. (The easiest way to picture them is to think of a piece of radioactive bubble gum attached to a wheel which is rolling around the outside of a larger wheel.) Includes a computer program (TRS-80 color computer) that will graph any epicycloid with integer values for the radii. (JN)
Descriptors: Astronomy, Computer Graphics, Computer Software, Geometric Constructions
Shooman, Andrew – Creative Computing, 1982
A program written for the 16K Level II TRS-80 computer that prints a star map, using various mathematical formulas to compute positions of the stars and the moon and displays them on terminals, is discussed. Some relevant astronomical background and terminology are covered in order to aid understanding. (MP)
Descriptors: Astronomy, Computer Programs, Computer Science, Computers
