The Simulator
We begin by describing the simulation part of our design tool. We will
work with circuits that have been designed already. Later you will
design your own circuits and simulate them using this simulator.
The simulator
is quite easy to use. Each circuit has input boxes, called sources
and output boxes, called signals. (A signal can be placed at the
output of any logic gate, not just at the output of the entire circuit.)
Each source has some value; that value can be changed to the complementary
value by
clicking on the input box.
Each signal shows the value at that point in the circuit for
the input values shown at the sources. To simulate a circuit for
different input values, one simply clicks on the sources to change the
input values and observes the output values at the signals.
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