word word
byte byte
bit bit
word length refers to the length of the word
1 word = 2 bytes (1 word = 2 byte)
1 byte = 8 bits (1 byte = 8bit)
The word length of a word is 16, and the word length of
a byte is 8
bps is short for bits per second. Generally, the transmission rate of modem and network communication is in "bps". Such as 56Kbps, 100.0Mbps and so on.
Bps is the abbreviation of Byte per second. Computers generally display speed in Bps, for example, 1Mbps is approximately equivalent to 128 KBps.
bit The smallest unit in computer memory, in a binary computer system, each bit can represent a digital signal of 0 or 1.
Byte A Byte consists of 8 bits, which can represent a character (A~Z), a number (0~9), or a symbol (,.?!%&+-*/), which is the basic unit of data storage in memory , as for each Chinese character requires two Bytes. When the memory capacity is too large, the byte unit is not enough, so there is a kilobyte unit of KB. The following is the correlation between the memory computing units:
1 Byte = 8 Bits
1 KB = 1024 Bytes
1 MB = 1024 KB
1 GB = 1024 MB
USB2.0 standard interface transmission rate. Many people misunderstand "480mbps" as 480 megabits per second. Actually, this is wrong, in fact "480mbps" should be "480 Mbit/s" or "480 Mbit/s", it is equal to "60 Mb/s", you can see the difference.
This starts with bit and byte: bit and byte are both translated as "bit", both are data measurement units, bit="bit" or "bit".
byte=byte is 1byte=8bits, and the conversion between the two is a 1:8 relationship.
Mbps=mega bits per second (megabits per second) is the rate unit, so the correct statement should be that the transmission speed of usb2.0 is 480 megabits per second, that is, 480mbps.
mb=mega bytes (megabit, megabyte) is a unit of measure, 1mb/s (megabytes/second) = 8mbps (megabits/second).
The hard disk capacity we are talking about is 40gb, 80gb, and 100gb, where b refers to byte, which is also "byte".
1 kb = 1024 bytes = 2^10 bytes
1 mb = 1024 kb = 2^20 bytes
1 gb = 1024 mb = 2^30 bytes
For example, the so-called 56kb modem in the past is converted into 56kbps divided by 8, which is 7kbyte, so the real speed of downloading files from the Internet and storing them on the hard disk is 7kbytes per second.
That is to say, the b related to the transmission speed generally refers to bit.
The b related to the capacity generally refers to the byte.
Last but not least: the transfer rate of usb2.0 480mbps=60mb/s is only a theoretical value, and it is also restricted by the system environment (cpu, hard disk and memory, etc.), and the actual reading, reading and writing speed of the hard disk is about 11 ~16mb/s. But it's also nearly 10 times faster than usb1.1's 12mbps (1.5m/s).