👉 The term "check bit" is a concept in digital electronics and computer science. It refers to the bit or bits that are set only when a particular condition is met. In simple terms, a check bit is used to determine whether a given byte (or any other data type) is valid or not. For example, if you have a 32-bit unsigned integer `x` and you want to know whether it's greater than zero, you would use the check bit at position 0