I learnt how to use timer/counter in mcs-51 by setting some values in register TMOD etc.
I wonder, what is the purpose to set the value of register THx or TLx to negative when we want to use timer mode. I saw someone does that and don't really know what does it mean.
I wonder, what is the purpose to set the value of register THx or TLx to negative when we want to use timer mode. I saw someone does that and don't really know what does it mean.