Bits

Hi /prog/rammers...

I'm an hobby programmer and I'm here to ask a really simple question... I tried to google it but I don't even know where to start my search

the notation:
0x00 = 00000000
how it is called?
how can I convert an 8bit array in this form?
for example how can I discover the notation or the bit pattern?
?? = 00110100
0xff = ??

can someone explain me the logic behind?

thank you...

Really? Well, the question is a bit... elementary, but it seems no troll so I'll answer.

It's a commonly used notation for 'hexadecimal' numbers, which is what you call any number written in base-16.

Look up numeric bases and conversion from one base to another. Decimal, octal, binary and hexadecimal are all just convenient and commonly used numerical bases.