Why is it that when I finish surfing the Internet, I don t see bytes but in Bs?

In the field of communications and computers, the English abbreviations for the units of quantity, such as "thousand", "megalobyte" and "ji", have slightly different meanings in some cases.

1. The smallest unit of information stored by a computer is called a bit, transliterated bit, and a "0" or a "1" in binary is called a bit.

2. The basic unit of computer storage capacity is byte, transliterated as Bytt, 8 binary bits form 1 byte, a standard English letter occupies a byte position, and a standard Chinese character occupies a byte position.

3. The size of the computer's storage capacity is measured in bytes, 1024 base system:

1024b（byte)=1kb

1024kb=1mb

1024mb=1gb

1024gb=1tb

In the field of communication, a lowercase k means 10 to the power of 3, i.e. an exact 1000 instead of 1024However, some books do not make such a strict distinction, but use a larger k to represent both 1000 and 1024. The specific situation is analyzed on a case-by-case basis. Let's take an example!

Suppose there is a data block of 100MB in length (where m is obviously not 10 6 but 2 20, i.e. 1024*1024, b is a byte, and 1 byte has 8 bits). On a channel with a bandwidth of 1 MB s (where m is 10 6), the transmission delay (= block length and channel bandwidth) is equal to (100*1024*1024*8b) (1*10 6b s)=.

1b = 1 byte.

An English character occupies 1 byte, a Chinese character occupies 2 bytes, a half-width symbol and number occupy 1 byte, and the full-width is 2 bytes.

1024b=1kb

1024kb=1mb

1024mb=1gb

1024gb=1tb

The B in the 1MB S in the Banquet is the bit, and the B in the said 1MB file is the byte. In general, lowercase stupid auspicious pin b is a bit, and uppercase b is a byte.

A 32-bit address means that there are 2 to the power of 32, which is 4294967296 address, i.e. from 0 to 1111 1111 1111 1111 1111 1111 1111** to decimal 4294967295).

Each address accesses one byte. Therefore, 4294967296 (i.e., 2 to the 32nd power) address accesses the 32nd power byte of 2, which is 4GB.

Bits speak of addresses, while bytes speak of addressability. Unit conversion is done by accessing one byte per address, rather than directly converting bits into bytes.

B to KB, KB to MB, MB to GB are all calculated according to the 10th power of 2, and the 10th power of 2 is 1024.

1 byte is equal to 8 bits, not 8 characters.

This is defined by the designer, there is no why.

KB and MB are the units of bytes, and a byte (B, Byte, which is what you call B) is 8 bits (B). 1024 is 2 to the 10th power, 8 is 2 to the 3rd power, because the computer can only recognize binary at the bottom layer, so it is a multiple of two.

As for your doubts, it is because: m, kb, mb, and gb are all byte units, and they are the same object, but b is replaced by b, which is no longer the same object.

For example, millimeters (mm), meters (m), and kilometers (km) are 1,000 times each time, and a 1 millimeter long gold bar weighs 8 milligrams, but it is not 1,000

byte: 8 binary bits are one byte (b), the most commonly used unit, byte is b.

1KB (kilobyte) = 1024B1MB (megabyte for "megabyte") = 1024KB1GB (Gigabyte also known as "gigabyte") = 1024MB bytes refers to a small set of adjacent binary digits. Usually 8 bits as a byte. It is a small unit that makes up information and participates in the operation as a whole, which is smaller than a word and is the unit that makes up a word.

In a microcomputer, the storage capacity of a memory is usually expressed in terms of how many bytes.

Conversion: 1kb (kilobyte) = 1024b

1MB (megabyte for short) = 1024KB

1GB (Gigabyte also known as Gigabyte) = 1024MB

Memory: 1024b = 1kb = 1024 bytes = 2 10 bytes (to the power of the power).

1024GB = 1TB = 1099511627776 bytes = 2 40 bytes.

1024TB = 1PB = 1125899906842624 bytes = 2 50 bytes.

b and bit:

Data storage is based on "bytes", and data transmission is mostly based on "bits" (bits, also known as "bits"), a bit represents a 0 or 1 (i.e., binary), and every 8 bits (bit, abbreviated as b) form a byte (byte, abbreviated as b), which is the smallest level of information unit.

In a computer, a string of numbers is processed or calculated as a whole, which is called a computer word, referred to as a word. Words are usually divided into bytes (each byte is usually 8 bits). In memory, usually one word is stored per cell.

If the data unit is GB, the traffic unit is 1GB = 1024MB, 1MB = 1024KB, and 1KB = 1024B.

1 byte = 8b;

1kb = 1024 (2 to the tenth power) bytes;

1GB = (2 to the twentieth power) KB = (2 to the thirtieth power) bytes;

Because = is an assignment operator.

So byte b=3; The system will detect that 3 is not in the byte range, i.e. between -128 and 127.

If you are there, there is no problem.

You can try.

byte b=128；

If you use Eclipse, it will tell you that the type does not match, you can't go from int to byte, and of course, there will be problems in the following cases.

byte b=3；

b=b+3;

This sentence will be problematic, because it involves the addition of the arithmetic operator + byte type and int type, which will naturally convert the byte type to int type, and the result of the calculation will be int type.

In this case, assigning the value of the int type to b of the byte type will prompt an error, but !!

If b=b+3; Changed to.

b+=3;You can't go wrong!

Because += is also an assignment operator, there is no problem with type conversion.

byte: 8 bits, the maximum amount of data stored is 255, and the data range is -128 127.

short: 16 bits, the maximum data storage capacity is 65536, and the data range is -32768 and 32767.

int: 32 bits, the maximum data storage capacity is 2 to the 32nd power minus 1, and the data range is negative 2 to the 31st power of positive 2 minus 1.

long: 64 bits, the maximum data storage capacity is 2 to the 64th power minus 1, and the data range is negative 2 to the 63rd power of positive 2 minus 1.

float: 32 bits, the data range is in, and f or f must be added after the number when directly assigning the value.

double: 64 bits, the data range is in, and d can be added or not added when assigning a value.

boolean: only true and false values can be used.

char: 16 bits, store unicode code, assign value with single quotation marks.