I want to find a tutorial or something else about technical knowledge of arranger workstations. Especially about memory architecture, which type of memory used in workstations (ram, preset rom, flash memory, user memory, style memory, sound memory, usb, hard disk) and for what each of these memory used for? For example how does a workstation take a sample voice from outside word, where does the arranger save that voice, how does arrenger use it.

What is multipad, what is vocoder ... etc.

How can learn such knowledge? Thanks a lot.