Thus a 5V TTL input will detect logic levels ... of a single driver behind each GPIO line it has a bank of buffers that can be switched in and out under software control, allowing the output level ...

Review: The Turtle Beach Stealth Ultra controller is a solid pro-level controller, but it makes some big compromises.

They compared a Python-based control loop on a Raspberry Pi 3B against an C0-12DD1E-2-D AutomationDirect CLICK Programmable Logic Controller using a simple water heating example.

The standard is intended to symbolize the binary control functions of a system in a manner that can be applied to any class of hardware, whether it be electronic, electrical, fluidic, pneumatic, ...