1, C # Basic finishing (method of conversion)

In-process binary conversion to decimal (method of adding weights)

110101 =1*2^5+1*2^4+0*2^3+1*2^2+0*2^1+1*2^0

1, write 2

2. Index (right to left)

3, multiply coefficient (one by one corresponds)

4. Add

Decimal to Binary (in addition to the right to take the remainder)

The remainder is taken from bottom to top, except 2 to quotient 0

Simple method: ... 8421

Hexadecimal expression

0123456789ABCDEF

octal, hexadecimal and decimal conversions with binary and decimal

Octal representation method o253, hexadecimal representation method ox11

Binary turn octal

ex.11101101 =011 (0*2^2+1*2^1+1*2^0) +101 (1*2^2+0*2^1+1*2^0) +101 (1*2^2+0*2^1+1*2^0)

=o355

1, from right to left three bit a group, not enough to fill 0

2, calculate the value of each group

3. In the order of grouping from left to right

Octal binary to binary: Inverse/divided by 2

Binary Turn hex

ex.11101101 =1110 (1*2^3+1*2^2+1*2^1+0*2^0) +1101 (1*2^3+1*2^2+0*2^1+1*2^0)

=oxed

1, from right to left four bit a group, not enough to fill 0

2, calculate the value of each group

3. In the order of grouping from left to right

Hex Turn binary: Inverse/divided by 2

1, C # Basic finishing (method of conversion)