In electronics, a series of modules is often referred to as a cascade.
It is used in order to achieve
a greater effect than would be possible with only one module.
Cascades have a number of unique characteristics...
The modules are connected in series.
The output of a module
forms the input of the next higher module.
Each higher module can,
but need not, have additional inputs.
Cascades are widely used in amplifier circuits,
where a weak signal is amplified in multiple modules.
Also in digital electronics cascades are frequently used.
Examples of cascades can be found in the topics...