A binary counter is a digital device that counts in binary numbers, which use only two digits: 0 and 1. It operates by flipping bits in a sequence, where each bit represents a power of two. For example, a 3-bit binary counter can count from 000 (0 in decimal) to 111 (7 in decimal) before resetting to 000. These counters are commonly used in electronics and computer systems for various applications, such as measuring time or tracking events. They can be implemented using simple circuits like flip-flops, which are fundamental components in digital electronics, or through software in programming languages like Python or C.