What is a bit and a byte, and how many bits are in a byte?

What is a bit and a byte, and how many bits are in a byte?

• A. A bit is the smallest unit of data (0 or 1); a byte consists of 8 bits.
• B. A byte consists of 16 bits.
• C. A bit is 8 bits; a byte is 1 bit.
• D. A bit is the smallest unit of data; a byte consists of 4 bits.

Answer: (A)

A bit is the smallest unit of data in computing, representing a 0 or a 1. A byte is made up of 8 bits, and it’s the standard size used to store a single character in most systems (for example, ASCII). Because it has 8 bits, a byte can represent 2^8 = 256 different values, which is why storage and memory are organized in bytes and powers of two. The other options don’t fit because a byte is not 16 bits, a bit isn’t 8 bits, and a nibble is 4 bits, not a full byte.

A bit is the smallest unit of data in computing, representing a 0 or a 1. A byte is made up of 8 bits, and it’s the standard size used to store a single character in most systems (for example, ASCII). Because it has 8 bits, a byte can represent 2^8 = 256 different values, which is why storage and memory are organized in bytes and powers of two.

The other options don’t fit because a byte is not 16 bits, a bit isn’t 8 bits, and a nibble is 4 bits, not a full byte.