Decade counter 7490 theory

The 7490 is a decade counter integrated circuit that counts from 0 to 9 (10 states) in binary. It operates using a combination of flip-flops and logic gates, where each flip-flop represents a bit in the binary count. When the counter reaches its maximum count of 9, it resets to 0 on receiving the next clock pulse. The 7490 can be cascaded with additional counters to count beyond 10, making it useful in digital applications like timers and frequency counters.