

The unit of measurement used to measure the transfer rate of computer external devices is: "MB/s". MB is the storage capacity, "MB/s" is the transfer rate, and "MB/s" means megabytes per second, which refers to the number of bytes transferred per second.
Basic concepts
Bit (bit, also known as "bit"): The abbreviation of bit is b, which is the smallest unit of data in a computer (It belongs to the category of binary, which is actually 0 or 1)
Byte (byte): The abbreviation of Byte is B, which is the basic calculation unit of computer file size. For example, a character is 1Byte, and if it is a Chinese character, it is 2Byte.
Conversion
1B (byte) = 8b (bit)
1 KB = 1024 B
1 MB = 1024 KB
1 GB = 1024 MB
1TB = 1024GB
The unit of data transfer rate is generally MB/s or Mb/s.
In official data on data transmission rate (such as the telecommunications department), Mb/s is generally used as the unit.
The download software (such as IE, Thunder, Express) generally uses MB/s as the unit.
Theoretical value of broadband maximum download:
1Mb/s = 0.125MB/s = 128KB/s
The M of 1M broadband mentioned by the telecommunications department refers to Mb/s. The transmission rate when downloading software is MB/S, which is the 1M broadband download speed. The fastest is 128KB/s, and after removing the loss, it is about 120KB/s.
According to this statement, the fastest download speed of 10M broadband is 1.25MB/s, and the fastest download speed of 100M broadband is 12.5MB/s.
MB/s means megabytes per second, Mb/s means megabits per second, the former refers to the number of bytes transmitted per second, and the latter refers to the number of bits transmitted per second number. The two are completely different. Byte is the number of bytes, and bit is the number of bits. In computers, every eight bits is one byte, that is, 1Byte=8bit, which is a 1:8 correspondence. Therefore 1MB/s is equal to 8Mb/s. Therefore, when writing units, you must pay attention to the capitalization of the letter B. At this time, the size of the letter B can really be called a slight mistake, and a mistake of a thousand miles.
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