In SX Microcontrollers, SX/B Compiler and SX-Key Tool, George Herzog wrote:

Hi Zera,
There seems to be a language barrier here.  Often non-native English is just too general or too vague.

I am guessing the following:

By 'radiowave' you really mean electronics.

If that is so, your questions begin to be understandable.

1. Schematics are a system with its own vocabulary.  The lines represent wires and the symbols represent devices.
    You need to learn what each device can do before you can easily understand a schematic.

2. [I just cannot under stand the question}

3. While I am again unsure about your question, most of the digital electronics require at least 3.3volts.  
    LEDs are about the only thing that is useful and can operate on less than that, maybe 2.2volts.

I am also guessing you are quite young.  If that is so, don't worry about your questions sounding odd -- just keep trying and try to improve your English along with your electronics.  You will learn two skills at the same time.

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