# difference between kb and mb

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### Use malloc to allocate 2 kb space, and then use realloc to adjust to 6 kb, 1 MB, 3 MB, and 10 MB space, and fill these five memories with "A", "B", "C", "D", and "E" respectively.

# Include # Include # Include # Include Int main (void) { Char * str1 = NULL; Char * str2 = NULL; Char * str3 = NULL; Char * str4 = NULL; Char * str5 = NULL; Str1 = (char *) malloc (2*1024 * sizeof (char )); If (str1 = NULL) { Printf ("malloc error! \ N "); Return-1; } Printf ("malloc 2kb: % P \ n", str1 ); Memset (str1, 'A', 2*1024 * sizeof (char )); Printf ("mem content: % s \ n", str1 ); Str2 = (char *) realloc (str1, 6*1024 * sizeof (char )); If (str2 = NULL) { Printf ("realloc error! \ N ")

### KB and KB,MB and MB, explaining computer storage units in detail

1, first, K and K case is no difference (kilo), M and M is the same 2, B is a bit, that is, a bit, B is a byte, that is, Byte, 8bit =1byte, a letter a byte, a man two bytes 3, 1024B =1KB,1024KB=1MB,1024MB=1GB,1024GB=1TB Answer 1: Why 200M Broadband in the network transmission speed also did not reach 200M. Because b in 200Mbps is lowercase, equivalent to 25MB PS Q-2:KB,

### TB GB MBKB B BIT

The size of the computer stores information, the most basic unit is byte, a Chinese character consists of two bytes, letters and numbers are composed of a byte. Units of capacity are from small to large: bytes (B), KB, MB, GB, TB. The relationship between them is. 1tb=1024gb 1gb=1024mb 1mb=1024kb 1kb=1024 bytes Usually people use the simple name, the back of the "B" removed, so you ask the 1GB is 1024

### PHP file directory size statistic function (automatic calculation BYTES,KB,MB,GB)

Calculates the size of the folder, including subfolders, formatting the output folder size, number of files, and the number of subfolders. The code is as follows Copy Code ?Code can also be used to statistic the number of directoriesFormat output Directory size unit: BYTES,KB,MB,GBfunction Getdirectorysize (\$path){\$totalsize = 0;\$totalcount = 0;\$dircount = 0;if (\$handle = Opend

### PHP algorithm-Sort file size (kb, MB, GB, Tb)

Having stayed at school, I went over PhP and looked at the previously written functions. I suddenly wanted to write the known file size and sort the data. For example: 1.3G, 153 MB, 458kb, 998 m, 0.99g (the difference between MB and MB is not considered here, and generally does not involve the operation of

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### Byte, KB, MB, GB, TB, PB, EB, ZB, YB, DB, NB What do you know?

The smallest base unit is byte. Not many people do not know, the following first in order to give all units Byte, KB, MB, GB, TB, PB, EB, ZB, YB, DB, NB I only know the top five, and most people know that, according to the rate of 1024 calculation 40 1tb=2 byte=1099511627776 Byte of the second order 1pb=2 's 50-time Square Byte=1125899906842624byte 60 1eb=2 byte= 1152921504606846976 Byte of the second order

### Computer storage unit: bit, Byte, KB, MB, GB, TB, PB, EB, ZB, BB

What is the storage unit of a computer? Computer storage units are generally expressed in bit, Byte, KB, MB, GB, TB, PB, EB, ZB, BB, We often refer to the byte abbreviation as B and ask K for the KB abbreviation. What a few k, what a few B. Two, what is their conversion relationship? 1, the smallest unit in which the computer stores information: bit bit (

### Computer storage units Byte, KB, MB, GB, TB, PB, EB, ZB, YB, DB, NB

In the computer newspaper, the Dutch bank's 20 data centers have about 7PB of disk and more than 20PB of tape storage, and the annual growth of 50%~70% reserves, So want to see how much PB, calculate 27pb about 400,000 80 of the hard disk size. 1Byte = 8 Bit (0,1) 1 KB = 1,024 Bytes (size of a shortcut) 1 MB = 1,024 KB = 1,048,576 Bytes (size of a floppy disk) 1

### Php statistics file size, in GB, MB, KB, B output_php tutorial

The size of the php statistics file, which is measured in GB, MB, KB, and B. Use the filesize () function command to calculate the file size. the value 1 must be an output of GB, MB, KB, and B. 2. the order of magnitude must be greater than 1 and less than 1024, and two decimal places must be retained. use the filesize

### B, kb, MB, GB

1 TB = 1024 GB 1 GB = 1024 MB 1 MB = 1024kb 1kb = 1024 byte note: byte means B, that is, byte KB is a kilobytes of MB, that is, GB is a Gigabit, that is, a gigabit. Generally, they can be viewed as a kilobytes of data, the accuracy is that 1024 is the 10th power of 2. In the unit of storage capacity, bytes are the most

### Bit,bytes,kb,mb,gb,tb,pb,eb,zb,yb

In the computer newspaper, the Dutch bank's 20 data centers have about 7PB of disk and more than 20PB of tape storage, and the annual growth of 50%~70% reserves,So want to see how much PB, calculate 27pb about 400,000 80 of the hard disk size.1Byte = 8 Bit1 KB = 1,024 Bytes1 MB = 1,024 KB = 1,048,576 Bytes1 GB = 1,024 MB

### Android get folder, file size in B, KB, MB, GB

Android get folder, file size in B, KB, MB, GBpublic class Filesizeutil {public static final int sizetype_b = 1;//Gets the double value of file size unit B public static final int sizety pe_kb = 2;//Gets the file size in kilobytes of double value public static final int sizetype_mb = 3;//Gets the file size unit to MB Double value public static final int sizety PE

### File size and footprint size (with byte to KB,MB formula)

A lot of people have been confused, "size" and "footprint (size on disk)" In a file or folder property usually do not match each other. The value of size represents the number of bytes in the actual size of the file, while the space-occupying value table file occupies the size of the hard disk space.This difference comes from the way the file system stores files on the drive. To reduce the number of addresses used, the file system treats a certain num

### Php statistics file size, measured in GB, MB, KB, and B

Use the filesize () function command to calculate the file size. The value 1 must be an output of GB, MB, KB, and B. 2. the order of magnitude must be greater than 1 and less than 1024, and two decimal places must be retained;Start:Copy codeThe Code is as follows:\$ Len = filesize ("1. rmvb ");\$ I = 4;While (\$ I ){If (\$ out = \$ len/pow (1024, \$ I)> 1.0 | \$ I = 1 ){Switch (\$ I ){Case 4: {printf ("%. 2f TB", \$

### Storage Capacity Unit: Bit, Byte, KB, MB, GB, TB, PB, EB, ZB, YB, zbyb

Storage Capacity Unit: Bit, Byte, KB, MB, GB, TB, PB, EB, ZB, YB, zbyb I recently read the Hadoop authoritative guide book, which has been designed by many organizations, However, my previous books seem to only teach GB, The current textbooks may be terabytes or petabytes of data, but I'm not sure. However, in the near future, there may be larger units that can be used, These days I 've been playing a b

### Php statistics file size, measured in GB, MB, KB, and B

I learned the fread reading command and used the filesize function. when I knew that this function was useful, I used it to compile the statistics file size function and used the filesize () function command to collect statistics on the file size, requirements: 1, with one output in GB, MB, KB, and B; 2. the order of magnitude must be greater than 1 and less than 1024, and two decimal places must be retaine

### A simple introduction to the PHP implementation of byte conversion to KB, MB, GB, TB method

This article mainly introduces the PHP implementation of byte-byte conversion to KB, MB, GB, TB method, combined with an instance of PHP for the byte count of the conversion operation of the specific implementation method, involving the use of PHP mathematical operations related functions, the need for friends can refer to the next This article describes the PHP implementation of byte bytes converted to

### Server common Mbps, MB, Kbps, KB, bps unit conversions

When we choose VPS, Server host, we often see the common MB, GB, Mbps, and so on some of the labeling units. Most of us will probably know MB (megabytes), which is much larger than the amount of memory we often use. But if the bandwidth is involved in Mbps, it may be a bit difficult to understand, such as we often see that there is 2Mbps bandwidth, many people will understand that 2MB, and then use the file

### Bit,byte, Kanji, kb,mb,gb,tb ...

Bit-----bit, bit, both of which can be said. It is the smallest unit of storage data in the computer.For example: 1111 1111 or 0000 0000 Each 1 or each 0 is a bit.byte--byte (denoted by B), which is the basic unit of computer storage capacity1 byte = 8 bit = "A" or "B"//is a letter of 26 letters anyway.2 byte = 1 Kanji =2 * 8=16 bit (this sentence can also be written in 2b=1 kanji =16 bit)Kb1 KB = 1024x768 byte (or write 1

### What is a bit, byte, Word, KB, MB?

1. Bit is the smallest unit of data in a computer, and each bit can have a status of only 0 or 12. Byte (byte) 1Byte = 8 bit It is the basic unit of measurement for storage space, and 1byte can store an English letter or half Chinese characters. 3. The word consists of a number of bytes, the number of words is called word length, different grades of machines have different lengths. 8-bit machine: 1 words = = a Byte, Word length is 8 bit 16-bit machine: 1 words = = 2 bytes, word length is 16 bit

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