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Asserted Levels

Logic signals are often used to initiate actions.

A signal is asserted   if it is active.

A signal is unasserted if it is inactive.

The labeling of signals reflects this, for example:

LOAD active H
$\overline{RESET}$ active L
$RD/\overline{WR}$ bistate
where bistate   means

H \to RD \ {\rm asserted} \\
L \to WR \ {\rm asserted}

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