| The Cellular Automata of John von Neumann
The Main View window
At start, the program WJVN.EXE appears as a window in which a rectangular portion of the 640x480 automaton lattice is shown with the resolution of 8x8 = 64 pixels per cell. In this representation 7x7 = 49 pixels are used to represent the state of a single cell as a small colored icon (see cell symbols). The remaining 15 pixels are used to evidence the cell-lattice grid.
This window is defined the Main View in order to be distinguished from the Synoptic View window, where the cell lattice is shown with the resolution of one pixel per cell. To activate the Synoptic View click button on the left toolbar of the Main View window or select the item Synoptic View window in menu Show.
Since the fundamental state (vacuum state) of a cell is represented by a dark blue square of 7x7 pixels, the Main View window entirely filled with vacuum states appears as a dark blue rectangle (if the grid is not shown).
You can change the position of the cell-lattice portion shown in the Main View by using the scrollbars on the right and the bottom of the window. If the Synoptic View window is open, the position of the cell-lattice portion in the Main View is represented by a magenta rectangular contour. By clicking and dragging this contour, the positions of the lattice portion displayed in the Main View, as well as those of the scrollbar sliders of this window, change accordingly. Vice versa, by dragging the scrollbar sliders of the Main View window, the position of the rectangular contour in the Synoptic View changes accordingly.