Computer Architecture (I)-hexadecimal

When learning computer basics, we will all mention various hexadecimal formats. In R notation, It is equal to R in 1. We usually use decimal numbers in our daily life, week 7, 12-digit time, and 24-digit time. However, binary is commonly used in computers, and binary can only be recognized. Today, we will briefly talk about the conversion between common hexadecimal formats.

 

1. R: Convert to decimal.
Tip: expand by right and sum them in sequence.
Example:
Binary 1101.11 to decimal

Note: (1) the weight is the size of the location. For example, the decimal value of 243,2 is the 2nd power of 10, and the value of 4 is the 10th power, 3 is the power 0 of 10.
(2) to identify which base is currently used, mark it with a scalar.

 

2. Convert decimal to R in hexadecimal notation
Tip: Except R, remainder, inverted
Example:
Convert decimal 68 to binary

Let's take an octal example. Convert decimal 168 to octal:

 

3. Convert decimal places to r decimal places
Tip: perform an integer. after the decimal point, take 2 as an integer.
Example:
Decimal decimal: 0.3125 to binary decimal:

Convert decimal number 68.3125 to binary number:

Note: When the decimal point is converted to the binary system, the decimal point will never be 0. Therefore, the required precision can be calculated.

 

4. Binary to hexadecimal
Tip: Start from decimal point, four to one. That is, the four digits of the integer part correspond to one hexadecimal value. There are not 4 digits on the left, 0 on the front, 4 digits on the right of the decimal part, and 0 on the back.
Example:

5. hexadecimal to binary
Tip: from left to right, one to four.
Example:

6. Conversion between octal and binary
Tip: three-to-one,One to three. Refer to hexadecimal
Example:

 

Other hexadecimal conversions can be converted to binary before conversion. The next blog will introduce the code system. welcome to join us.