Author: Richard M. Merrill, Digital Equipment Corporation, Maynard, Massachusetts

The analysis facilities for high-speed data input and display have been adapted to the LINC-8 computer and several extra features have been added.

The basic program allows display of a complete three-dimensional data matrix as a 2D projection or as a contour display. Vertical or horizontal cross-sections of the data may also be displayed. The third basic mode, the Twinkle Display, shows dynamically the X and Y coordinates of only the current data points.

Additional features: (All numbers indicated below are octal.)

1. Display
   1. Histograms (including three-dimensional histograms) may be plotted as an option via sense switch zero.
   2. The data matrix is 100 x 53; the Twinkle Display is 100 x 100.
   3. For one-dimensional analysis, the X or Y coordinate may be changed via a control knob for selection of the data region. (Max: 53(Y) sets of 100(X) values of Z.)
2. Z-Coordinate
   1. The Z-coordinate may also be an analog signal instead of a count.
   2. X; Y; or Z coordi nates may be taken from any of 16 built-in A-D converters. The value of Z for a given X, Y will be the last one taken.
   3. If the signal-to-noise ratio is small, then Z may be taken as a running average over 2N samples; plus N is read from the left switches.
3. Miscellaneous
   1. A built-in variable timer is used and may be calibrated.
   2. Qualitative audio indications oft X and±Z are available.
   3. The LINC-8 Library System and data storage via DECtape may be used.

Catalog: November 1969