The relationship between byte character, bit, bit, byte
1. Overview
- Bit (bit): is the minimum unit of data stored inside the computer, and represents a binary digit, is an eight-bit binary number 11001100.
Computer's memory in the smallest unit, a computer system in binary, each bit may represent a digital signal of 0 or 1.
- Byte (byte): is the basic unit of computer data processing, denoted by a capital B Traditionally, 1B (byte, byte) = 8bit (bits).
A Byte composed of 8 bits, may represent a character (A ~ Z), numbers (0 to 9), or symbols (,% & + -.?! * /), Is the basic unit of memory to store data.
- Character: letter refers to the use of a computer, numbers, and symbols
2. Expand
- Byte reason
Just beginning computer data processing operations, it is 0-9, with operational sign, 4bit enough. For example (this is not actually): 0000 represented by 1,0010 0,0001 represents represents 2, and so on.
Later joined letters, symbols and other programs, 8bit is enough, but this time the birth of ASCII coding standard, we say that out of the 8bit byte value called the (byte) it, so there is this byte units.
So 1byte equal 8bit computer in the development of a convention out of the rules.
- Chinese character:
Character 1 = 2 byte = 16 bit (this is not very accurate, when different coding, when a number of bytes occupied by the characters will be different, some code is 2 bytes, and some are not, it may be 3 or 4)
- usb2.0
usb2.0 transfer speed is 480Mbps, i.e., 480 Mbit / sec.
mb = mega bytes (megabits, megabytes) is the amount of units, 1mb / s (megabytes / sec) = 8Mbps (Mbits / sec).
Transmission speed related generally refers to a bit b
- computer disc
Hard disk capacity is 40gb, 80gb, 100gb, b here refers to a byte is "byte."
= KB = 1024 bytes. 1 2 ^ 10 bytes
. 1 MB = 1024 = 2 ^ 20 is kB bytes
. 1 GB = 1024 MB = 2 ^ 30 bytes
B related to the capacity generally refers byte