Represented by either a 0 or 1, a _____ is the smallest unit of data a computer can process.

• A. Nibble
• B. Bit
• C. Byte
• D. Pixel

Answer: (B)

The fundamental idea here is that computers store and manipulate information in binary form, using bits. A bit is a single binary digit, either 0 or 1, and it is the smallest unit of data a computer can process. Everything else—nibble (four bits) and byte (eight bits)—is just a larger grouping of these bits used to represent bigger values. A pixel, while related to digital images, is not a basic processing unit of information; it’s a unit in an image, built from bits but not the smallest data unit by itself. So the best answer is the bit, the 0 or 1 that forms the most elementary piece of data.