Hardware Timers
Hardware timers are dedicated electronic circuits or modules within microcontrollers, processors, or embedded systems that generate precise timing signals, delays, or periodic interrupts. They operate independently of the CPU, allowing accurate timekeeping, event scheduling, and pulse-width modulation (PWM) without software overhead. Common applications include real-time systems, sensor sampling, motor control, and communication protocols.
Developers should learn hardware timers when working on embedded systems, IoT devices, or real-time applications where precise timing is critical, such as controlling servo motors, generating audio signals, or implementing communication baud rates. They are essential for reducing CPU load by offloading timing tasks, ensuring deterministic behavior in time-sensitive operations, and enabling low-power modes by waking the system at scheduled intervals.