Truth Table Document

Truth Tables

A truth table describes a logic gate and is used within one or more Logic Definitions.

Each contains a Name and optionally a Description. These are used by the Navigator.

• Click Add Column... to create a new column. Enter the name for the new column in the dialog. To add more than one column, separate the list with commas:

  

• Click Remove Column... to remove a column. Select more than one column to remove multiple columns:

  

See Entering Data into Logic Tables for help on how to modify data within a truth table.

Values in Truth Tables

Each entry in the table must be one of the following values:

• L - Low Input
• H - High Input
• X - Either Low or High Input (Don't care)
• Z - High Impedance Output
• 0 - Low Output
• 1 - High Output