Network bandwidth and traffic unit conversion

Preface:
Usually we would say pull the broadband, then turn it comes to bandwidth will feel a bit ignorant force; as well as in our actual Internet applications also often say pull 1 trillion (M) broadband download speed of only 100 KBps (KB / s) broadband rate the size of words;
the OK, because personal knowledge of relevant network also lacks, so write the blog to make summary description.

Summary:
In computer science, the common unit is as follows:
bit (bit) is the smallest unit of information, called bins; generally denoted by 0 and 1.
Byte (Byte), consists of eight bits (bit) is one byte (Byte), a computer is used to represent the characters.
and may be between Byte bit conversion, which is conversion relationship:
1Byte = 8bit (or abbreviated as: 1B = 8b, Chinese pronunciation: 1 byte = 8 bits), the intake thereof was 8; B is a bit Abbreviation , i.e., "bit" is the smallest unit of storage in information technology, a representative of a "1" or "0"; B is byte abbreviation, i.e. "byte" information technology in one of the smaller memory unit , an English one byte character, a character accounted for two bytes.

Analogy results: 1MB = 1024KB = 1024 * 1024B (B byte i.e., Byte);

(Mbps) megabits
average number of bits within the data transmission time, which in bits per second (bps), or kilobits per second ( kbps), or megabits per second (Mbps), which is converted to the relationship: 1Kbps = 1024bps, 1Mbps = 1024 * 1024bps ( sometimes referred to as simply to calculate 1Kbps = 1000bps, 1Mbps = 1000000bps) .
Reflects the data transfer rate between the information processing capability of the terminal device, it is an average over time.

Therefore 1Mbps (1 Mbps) = 0.125M Byte / s (0.125 megabytes per second) = 0.125M Byte / s * 1024 = 128KB / s (128 kilobytes per second)
that is 1Mbps (megabits per second ) = 1 / 8MB / s (one-eighth of megabytes per second)

Description:
. IB = 8B
while expanding 1024 * 1024 on both sides of the equation established constant, i.e.,:
. 1. 8 MB = Mb

turn obtained above formula, transmit 1Mb per second, namely: the second transmission 1 / 8MB = 0.125MB, namely:
1Mbps Byte = 0.125 M / S =. 1 / 8M Byte / S * 1024 = 128 KB / S

summary:
operating a computer network or the network Suppliers for the general broadband bps rate expressed in units (or b / s); bps represents i.e., it indicates how many bits of information transmitted per second, is an abbreviation of bit per second bits per second. 1M meaning of said actual bandwidth is 1Mbps [mega bits per second is (Mbps), not megabytes per second (MBps).

Conversion formula:

. IB = 8B. IB / S = 8B / S (or 1bps = 8bps)
1KB = 1024B 1KB / S = 1024B / S
1MB = 1024KB 1MB / S = 1024KB / S

128KB / S = 128 ×. 8 (Kb / S ) = 1024Kb / s = 1Mb / s , ie: 128KB / s = 1Mb / s .

Tips:
Theory: 2M (i.e. 2Mbps) broadband theoretical rate: 256KB / s (i.e. 2048Kb / s), the actual rate of about 103-200KB / s; (which is the reason for performance by a computer user, the quality of network equipment, resource usage, many factors influence the peak of the Internet, web services capabilities, line attenuation, signal attenuation caused). 4M (i.e. 4Mbps) broadband theoretical rate: 512KB / s, the actual rate of about 200-440KB / s