The hard disk manufacturer is calculated in GB (decimal, that is, 10 to the power of 3 = 1000, such as 1MB = 1000KB), and the computer (operating system) is GiB (2, which is 2 to the power of 10, such as 1MiB = 1024KiB) is calculated, but the user in the vertical is generally understood to be 1MB=1024KB, so in order to facilitate the understanding of Chinese culture, it is also possible to translate MiB to MB.
Also according to the different understanding of the size of the hard disk manufacturers and users for 1MB, so the actual capacity of a lot of 160G hard disk is less than 160G according to the actual computer 1MB = 1024KB, which can explain why the newly purchased hard disk is "not short and short" It is as big as it is marked.
In broadband networks, what operators say of 1M bandwidth is 1 Mbps (megabits per second). Bps is an abbreviation for bit per Second, which means how many bits per second. Is a single "bit" used to calculate the data transfer rate. For example, the telecom office usually says 1M wide, the unit used is bps, we all know that one byte is equal to 8 bits, and our computer's storage unit uses bytes, which is theoretically per second. The hard disk downloads 1X1024/8=128KB/sec data. But this is only a theoretical speed. In fact, you need to deduct about 12% of the header information (including Ethernet Header, IP Header, TCP Header, ATM Header, etc.), a variety of control signals. Therefore, the upper limit of the transmission speed should be about 112KB/sec, and it should not be understood as "a maximum of 1M bytes of data can be transmitted per second. So don't be superstitious about advertising. In the case of transmission units, B and b represent Bytes and bits, respectively. , the definition of the two is different, the gap is 8 times
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