The sequence "110101" is a binary number, which is a system of representing values using only two digits: 0 and 1. In this case, "110101" can be converted to its decimal equivalent, which is 53. Binary numbers are fundamental in computer science and digital electronics, as they are used to represent data and instructions in computers. In the context of computing, each digit in a binary number is referred to as a "bit." The position of each bit represents a power of 2, starting from the rightmost bit. For example, in "110101," the leftmost bit represents 2^5, the next 2^4, and so on, down to 2^0 on the right. This system is essential for the operation of devices like computers and microcontrollers.