Above 2V but usually pretty close to 5V is a logic ... extra hardware required. In the other direction, driving a 3.3V input from a 5V output you might expect that a level shifting circuit would ...

For those just getting their start in digital logic, this teaching tool ... for the creation of custom logic circuits without the need for external hardware or complex programming.

A simple logic circuit that is used to connect complex logic circuits together. For example, an ASIC chip may contain large functions, such as a microprocessor, memory block or communications ...