EmanuelGrayson458

The RS232 serial slot onto a Desktop computer makes use of 3 to 25 volts to signify a reason a better standard of , and -3 to -25 volts to indicate a reasoning amount of 1. Most microcontrollers use TTL / CMOS common sense grades which use to some tolerance voltage to indicate a reasoning a higher level , as well as some tolerance voltage to 5 volts to signify a reasoning standard of 1. To help the Computer and a microcontroller to actually express some logic grade language translation is critical. 5vdc 15w power supply