ASCII Code rules and techniques

The ASCII code of letters and numbers is very easy to remember. First, observe the inherent laws of ASCII codes. (1) The table is constructed into 16 rows and 8 columns. (2) the entire table can be divided into two parts: 3 columns near the left are not commonly used, and 4 columns on the right are commonly used. (3) There are only 26 English letters, so they must be displayed in two columns. 2. for common

The ASCII code of letters and numbers is very easy to remember. First, observe the inherent laws of ASCII codes. (1) The table is constructed into 16 rows and 8 columns. (2) the entire table can be divided into two parts: 3 columns near the left are not commonly used, and 4 columns on the right are commonly used. (3) There are only 26 English letters, so they must be displayed in two columns. 2. for common

The ASCII code of letters and numbers is very easy to remember.

First, observe the inherent laws of ASCII codes.

(1) The table is constructed into 16 rows and 8 columns.

(2) the entire table can be divided into two parts: 3 columns near the left are not commonly used, and 4 columns on the right are commonly used.

(3) There are only 26 English letters, so they must be displayed in two columns.

2. for common parts, we only need to remember the ASCII code of several letters or numbers:

(1)

The ASCII code of A is 65.

The ASCII code of a is 97.

The ASCII code of 0 is 48.

(2) or, memory hexadecimal (H)

1 31

A 41

A 61

And so on

You can calculate the ASCII code of other letters and numbers by knowing the 32-digit gap between the corresponding size and number.

3. For infrequently used parts

Simply remember the following four items:

Binary (B) hexadecimal (H) decimal (D)

CR enter keys

LF soft return key (for Word documents)

ESC return key 0001,1011 1B 27

SP Space key 0010,0000 20 32

Although the standard ASCII code is a 7-bit code, because the basic processing unit of the computer is byte (1 byte = 8 bit), it is generally stored in one byte as an ASCII character. The extra bit (highest bit) in each byte is usually kept as 0 in the computer.