Question: what is tccr1a in arduino?
Answer: TCCR1A and TCCR1B are the two 8-bit control registers. These set up the clock prescale ratio, set the mode for the counter/timer and set the output control for the PWM pins. ... Each timer has 2 or 3 channels which control a dedicated pin if the relevant output mode is set and that pin is enabled as an output.