Binary conversion -- learning summary

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Update time ：2022-03-14

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Binary conversion reference ：
2-32 -> 10
10 - > 2-32
Hexadecimal conversion

C++ Operator
Reference resources ：
C++ Novice tutorial operator

2 Base number ：1111 0000
128 64 32 16 8 4 2 1
10 Base number ：240
16 Base number ：f0

Displacement calculation ：
A = 0011 1100
B = 0000 1101
A&B
result ：0000 1100
To be right is to be right , Negative or positive , Negative is negative

Left displacement ：
Grammar format ： Numbers that need to be shifted << The number of shifts n
Operational rules ： Move all numbers to the left by the corresponding number of digits in binary form , Move out of high position （ Abandon ）, The low vacancy makes up 0. Equivalent to times 2 Of n Power

Right displacement ：
Grammar format ： Numbers that need to be shifted >> The number of shifts n
Operational rules ： Move all numbers to the right by the corresponding number of digits in binary form , Move out low （ Abandon ）, The vacancy in the high position is filled 0. Equivalent to divided by 2 Of n Power

Hexadecimal conversion ： With 10 Hexadecimal is the reference , To switch
Example （ascii：1,10 Base number ：49）ascii The form has
2：110001 --1 2 4 8 16 32, With 2 Increasing multiple of , At the end of it is 1.
8：61 -- Satisfy 8, Then enter 1 position .
16：31 -- Satisfy 16, Then enter 1 position .