How big is the 20KB photo?

20kb is equivalent to the space occupied by writing 10,000 Chinese characters. A Chinese character is 2B, an English character and an Arabic numeral are both1b. The defecation is 400 mm X250 mm, and the pixel size of 20kb photo is as shown in the following figure:

1KB = 1024 b； 1MB = 1024KB = 1024× 1024 b .

1B(byte, byte) = 8 bit (see below);

1KB (kilobytes, kilobytes) =1024b = 210b;

1MB (megabyte, megabyte for short) =1024kb = 220b;

1GB (gigabyte, gigabyte, also called "gigabit") =1024mb = 230b;

In the field of information technology, especially when representing the main storage capacity, this unit of measurement is easily confused with KiB.

According to IEC naming standard, the standard names of binary storage units are KiB, MiB, etc. ， 1kiB = 1024B。 This is determined by the binary storage mode of the data stream.

Linux and macOS X are named according to the international system of units. However, Windows still incorrectly marks KiB as KB.

Because Windows system still records data capacity in the old way, the confusion has been generalized. Usually kilobytes can also refer to kilobytes, that is, 1KB = 1024B.

Baidu Encyclopedia -KB (kilobytes (unit of measurement))