The sequence "10111111" is a binary number, which is a system that uses only two digits: 0 and 1. In the binary system, each digit represents a power of 2, starting from the rightmost digit. For "10111111," the value can be calculated as 1×2^7 + 0×2^6 + 1×2^5 + 1×2^4 + 1×2^3 + 1×2^2 + 1×2^1 + 1×2^0, resulting in a decimal value of 191. Binary numbers are fundamental in computer science and digital electronics, as they are used to represent data and instructions in computers. Each binary digit, or bit, can be thought of as a switch that can be either off (0) or on (1). This simple system allows for complex data processing and storage in modern technology, including computers, smartphones,