bits and bytes

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base 10:        42
base 2:   00101010

 1 bit         0 or 1   (transistor)
 8 bit            256 = 1 byte
16 bit         65,536 = 64 kbyte
32 bit  4,294,967,296 = 4 Gb
64 bit  ~ 10 ** 20    = a lot

• Binary numbers
• Transistor