This symbol has no associated speed key names. (Use the full name of the symbol).
Signals
Digital inputs: <i1> through <i999>
Digital output: <out>
Description
The NOR (negated OR) symbol drives its output signal high if and only if all the inputs are low simultaneously.
The NOR symbol can be expressed using a truth table, where low stands for logical 0 (false), and high stands for logical 1 (true). Thus the truth table for a two-input NOR has <out> = high only for the row where both <i1> = low and <i2> = low.
Truth table for two-input NOR:
|
<i1> <i2> |
<out> |
|
low low |
high |
|
low high |
low |
|
high low |
low |
|
high high |
low |
See also OR