Final answer:
A Black Box is a mechanism that accepts input, performs unseen operations, and produces output. Examples include computers, electronic devices, and biochemical machines.
Step-by-step explanation:
The term used to describe any mechanism that accepts input, performs some operation that cannot be seen on the input, and produces output is a Black Box. A Black Box is a system where the internal workings are not visible, but the input and output can be observed.
For example, in the context of technology, a computer can be considered a Black Box. Users input commands and data, but they cannot see the internal processes that occur within the computer to produce the desired output. The user only sees the results of their input.
Other examples of Black Box systems include electronic devices, software applications, and even biological systems such as biochemical machines.