Chapter 6 binary, octal, and hexadecimal
6.1 why do we need octal and hexadecimal?
6.2 decimal number conversion to decimal number
6.2.1 convert binary to decimal
6.2.2 convert octal to decimal
6.2.3 expression of the octal number
6.2.4 use of Octal
6.1 why do we need octal and hexadecimal?
In programming, we usually use 10 hexadecimal notation ...... C/C ++ is a high-level language.
For example:
Int A = 100, B = 99;
However, because the representation of data in a computer exists in binary
6.1
Why do we need octal and hexadecimal?
In programming, we usually use 10 hexadecimal notation ...... C/C ++ is a high-level language.
For example:
Int A = 100, B = 99;
However, because the representation of data in a computer exists in
In programming, we usually use 10 hexadecimal notation ...... C/C ++ is a high-level language.
For example:
Int A = 100, B = 99;
However, because the representation of data in a computer exists in binary format, sometimes binary can be used to solve
Ii. Convert hexadecimal to decimalConvert binary to decimal: 0th bits in binary are 0 to the power of 2, and 1st bits are 1 to the power of 2 ......Therefore, there is a binary number: 0110 0100, which is converted to a 10-digit system:The following
5.8. hexadecimal. 2
5.8.1 hexadecimal
DescriptionIn hexadecimal notation, we will first ask: there are only 10 Arabic numerals in total: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9, how can we express the concept of "every 16 to 1? The method is to use English
Basic encryption and decryption problems: Conversion of byte arrays and (hexadecimal) strings, encryption and decryption in hexadecimal format
During encryption, encryption algorithms and hash algorithms operate on Byte arrays. These algorithms
C # convert a string (containing Chinese characters) to hexadecimal encoding (conversion ),
public static string Str2Hex(string s)
{
string result = string.Empty;
byte[] arrByte =
Php implements mutual conversion in hexadecimal mode and php in hexadecimal mode. Php implements hexadecimal conversion. php hexadecimal conversion converts each other from decimal to other hexadecimal conversion. this number is used to continuously
Popular usage: each bit of binary represents a State.
001,010,100 indicates three states.
Through or | operations, you can combine various States.
001 | 010 = 011
001 | 010 | 100 = 111
You can remove a certain State through and & Operations.111 & 00
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