Difference between revisions of "Byte"
From Sega Retro
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==Units== | ==Units== | ||
| − | + | ;Bytes | |
*1024 bytes = 1 KB (kilobyte) | *1024 bytes = 1 KB (kilobyte) | ||
*1024 KB = 1 MB (megabyte) | *1024 KB = 1 MB (megabyte) | ||
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*1024 GB = 1 TB (terabyte) | *1024 GB = 1 TB (terabyte) | ||
| − | + | ;Bits | |
*1024 bytes = 1 KBit (kilobit) | *1024 bytes = 1 KBit (kilobit) | ||
*1024 KBits = 1 MBit (megabit) | *1024 KBits = 1 MBit (megabit) | ||
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*1024 GBits = 1 TBit (terabit) | *1024 GBits = 1 TBit (terabit) | ||
| − | + | ;Conversion | |
*8 bits = 1 byte | *8 bits = 1 byte | ||
*8 KBits = 1 KB (kilobyte) | *8 KBits = 1 KB (kilobyte) | ||
Revision as of 11:46, 26 October 2015
A byte is a collection of eight bits (a binary value of 0 or 1) or two nybbles. A nybble is represented by single digit from 0 to F (sixteen numbers, thus hexadecimal). As such, bytes are represented by a two-digit number from 00 to FF (totalling 256 possible values).
There are two bytes in a word and four bytes in a double-word (or long word). Additionally, 1024 bytes make a kilobyte, 1024 kilobytes make a megabyte, 1024 megabytes make a gigabyte, 1024 gigabytes make a terabyte, etc.
Units
- Bytes
- 1024 bytes = 1 KB (kilobyte)
- 1024 KB = 1 MB (megabyte)
- 1024 MB = 1 GB (gigabyte)
- 1024 GB = 1 TB (terabyte)
- Bits
- 1024 bytes = 1 KBit (kilobit)
- 1024 KBits = 1 MBit (megabit)
- 1024 MBits = 1 GBit (gigabit)
- 1024 GBits = 1 TBit (terabit)
- Conversion
- 8 bits = 1 byte
- 8 KBits = 1 KB (kilobyte)
- 8 MBits = 1 MB (megabyte)
- 8 GBits = 1 GB (gigabyte)
- 8 TBits = 1 TB (terabyte)
Examples
- Nybbles represent single pixels in Mega Drive graphics.
- Bytes represent ASCII characters.
- Words represent one color in a Mega Drive palette.
- Double-words are used as absolute pointers in Mega Drive programming.