/**************************************************************************
 *       DOS.C                                                            *
 *       Digital Oscilloscope Simulater                                   *
 *                                                                        *
 *       This program demonstrates the DOUBLE BUFFERING technique for     *
 *       animation. While you are watching the current frame on the       *
 *       VISUAL PAGE, the new frame is actually being drawn on the        *
 *       ACTIVE PAGE. This leads to smoother animations.                  *
 *       You are allowed to use this source code, in part or in whole,    *
 *       But, please, would you kindly remeber to mention me.             *
 *                                                                        *
 *       Keys Used:                                                       *
 *            ARROW KEYS : ReScale,                                       *
 *            +/-        : Increase/Decrease Frequency,                   *
 *            //*        : Decrease/Increase Number of Sampling points,   *
 *            0/.        : Increase/Decrease Speed of animation.          *
 *                                                                        *
 *                                                                        *
 *       See Also Included: MOVEARC.PAS, PARAM.PAS, WAVES.PAS             *
 *                                                                        *
 *       Coded By:                                                        *
 *                  Amr A. Awadallah,            May 1992                 *
 *                  Computer Department,                                  *
 *                  Faculty Of Engineering,                               *
 *                  Cairo University,                                     *
 *                  Egypt.                                                *
 *                  e-mail : "amr@frcu.eun.eg" or "a.awadallah@ieee.org"  *
 *                  phone  : (202) 330-4738                               *
 **************************************************************************/
