1MB=8Mb。
1MB/s=8Mb/s。
And Mbps==Mb/s.
B is Byte, b is bit, 1B=8b.
M is the same, both are 1024×1024.
The 100Mbps of the network card is also defined by bit/s, so 100Mb/S=100 000Kbyte/s=(100 000/8)KByte/s=12 500KByte/s.
Therefore, in theory, the rate of 12.5MB can be transmitted in one second. Considering the interference factor, it is normal to transmit more than 10MB per second, and the speed of a 1000Mbps network card is about 100MB/s.
Calculate the true speed of fiber transmission:
The use of optical fiber to connect to the network has the characteristics of fast transmission speed and low attenuation. Therefore, many companies use optical fiber for their network exits. Generally, network service providers claim that the speed of optical fiber is "5M". Under normal circumstances, "5M" is actually 5000Kbit/s (calculated in thousands). There is a problem of conversion. .
Byte and bit are different. 1Byte=8bit. The download speed that is often said refers to Byte/s, so the "5M" mentioned by Telecom becomes (5000/8) KByte/s=625KByte/s after conversion. In this way, the highest download speed we usually have is 625KByte/s, which often means 625KB/S.
The above content reference: Baidu Encyclopedia-mbps