ABSTRACT
Inside the Toys Although electronic instruments often differ from one another in looks, form, and function, they almost always share a common set of basic building block components (Figure 4.1), including the following:
◆ Central processing units (CPU)—CPUs are one or more dedicated computing devices (often in the form of a specially manufactured microprocessor chip) that contain all of
Auxiliary controllers-These are external controlling devices that can be used in conjunction with an instrument or controller. Examples of these include foot pedals
(providing continuous-controller data), breath controllers, and pitch-bend or modulation wheels. Some of these controllers are continuous in nature, while others exist as a switching function that can be turned on and off. Examples of the latter include sustain pedals and vibrato switches.
