A bit is a binary digit, which is the smallest data increment on a computer. A bit can only contain one of two values: 0 or 1, which correspond to the electrical values off or on. Computers work with zeros and ones, which are represented by symbols called bits.

On a computer, a bit (short for binary digit) is the smallest unit of data. It can be either a 0 or 1. Bits are used to create more complex data types such as strings and integers.

Bits in computers are represented by symbols called bitsets. A bitset has two parts: a set part that represents a list of what's allowed and a clear part that represents a list of what's not allowed. For example, let's say we want to allow letters and numbers between 0 and 9 but not spaces. We could make this rule using a bitset: "01100101". This means the set part is 1 if you take away 4 from the number 15. So the letter E would make the bit set off because 4-E=1. The clear part with this bitset would be 1 if you took away 4 from 11, which is not a number so it's clear. There are several ways to represent a bitset. One way is through hexadecimal digits: 0x02. Another way is to use **a comma separated list** of sets and clears: 01100101, 10000001. Yet another way is to use the union operator | (logical OR). Any time you see the word bit, assume they mean the bit set operator!

A bit has a single binary value, which can be either 0 or 1. A nibble is equal to half a byte (four bits). In certain systems, an eight-bit unit is referred to as a "octet" rather than a "byte." The term "byte" will be used throughout this guide.

There are two types of bits: logical and physical. Physical bits are represented by transistors on a chip or other physical components. Logical bits are represented by **electrical signals**; there are several different methods for transmitting information using **only logical bits**.

Bits can be either on or off. If they were not, we would need **multiple levels** of signal transmission, which is more energy-intensive and carries with it **greater risk** of error.

The number of possible values a bit can take is called its capacity. For example, a bit can be zero or one at any given time. It cannot be both at the same time. Therefore, its capacity is equal to one. A bit can also be high or low. So, its capacity is equal to two. Physical bits have maximum capacities of three and four. Logical bits have infinite capacity.

Bits can be combined or divided. If you add together **all the bits** of a number, you get the original number.

A bit (short for "binary digit") is the lowest unit of measurement used in computer data quantification. While a single bit may define **a boolean value** of True (1) or False (2), it has nothing else to do. As a result, in computer storage, bits are frequently clustered together in **8-bit clusters** known as bytes. The term bit can also be applied to discrete units of information within a larger collection, such as songs on an album being composed of **several songs** with lengths ranging from under a minute to **over 5 minutes**. These mini-pieces of music are called frames.

Bits are used to represent binary values. The number 1 means true and 0 means false. Some computers use 1 to mean yes and 0 no, but this is not usually the case. Rather, they use a symbol called TRUE or FALSE instead. Computers use only two values: true and false. Anything else is just another option that can be chosen by your program at any time. For example, a computer file might have the option of being sorted alphabetically by name or by date created.

Bits can also be used to switch on and off electrical circuits. This is how computers work their magic: one bit switches on another bit, which switches on yet another bit, and so on. In this way, multiple circuits can be switched on or off simultaneously.

Bits can also be used as passwords.

A bit is short for **binary digit** and is a single unit of information that can have a value of 0 or 1. It is sometimes shortened as b. (off or on, false or true, low or high). The term bit can also be used to describe the unit of storage in computers and other devices which only has **two possible states**. For example, a byte is eight bits, a kibibyte is 1024 bits, and a mebibyte is 1048576 bits.

Binary digits are the basic building block of all information. In mathematics, computer science and engineering, a bit can be either a physical device such as an electrical switch or a logical state such as "on" or "off". A bit can also be referred to as a binary digit. The term "bit" comes from the early days of computing when data was stored in physical form as holes in a metal disk called a drum memory or tape memory. Bits could be represented by the width of a hole, so one bit would mean that the disk had one widthwise hole. Today, the term bit usually refers to the unit of storage in computers and other digital devices which can take on one of two possible values, "0" or "1".