Solved 7A:CA:E:1E:7C:80 in mac address what the single E means

May 11, 2016 at 06:16:34
Specs: Windows 7
i have the mac address this in arduino uno
7A:CA:E:1E:7C:80 what the single E means...???
i want know why they put single digit rather than the normal format. is there any reason behind this?
i am very new learner on this kind of things please help?

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✔ Best Answer
May 11, 2016 at 22:37:24
MAC address consist of 6 octets or bytes (8 bits).
Each octet has a range from 0 to 255 (Dec) or 0 to FF (hex) .

The representation for decimal value 14 in this case is E but could be 0E to conform to the format of 2 digits per octet.



#1
May 11, 2016 at 07:16:12
These are just two-digit hexadecimal numbers. The "E" is the same as "0E".

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#2
May 11, 2016 at 09:26:53
How odd... I'ver never seen a single character in a mac address; even if it's a letter preceded by a zero - as "ijack" seems to suggest is the case here... (where the zero is missing)?

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#3
May 11, 2016 at 09:42:20
Probably just a bug in whatever program djthapa used to get the MAC. The programmer probably fed the MAC into a byte array, but forgot to set a fixed size when he was printing out the bytes as hex.

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#4
May 11, 2016 at 18:44:54
thank you for your answer ijack sir, i will be more glad if you explain me how and why E is same as 0E?

message edited by djthapa


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#5
May 11, 2016 at 19:23:34
Which number is larger: 14 or 00014?

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message edited by Razor2.3


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#6
May 11, 2016 at 22:37:24
✔ Best Answer
MAC address consist of 6 octets or bytes (8 bits).
Each octet has a range from 0 to 255 (Dec) or 0 to FF (hex) .

The representation for decimal value 14 in this case is E but could be 0E to conform to the format of 2 digits per octet.


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