In computers, data and instructions are represented and processed in binary form. Binary encoding is a way of converting numbers, characters, and other data into a form that computers can understand and process. It uses two symbols, 0 and 1, to represent the status of information.
The most basic encoding used internally by computers is ASCII (American Standard Code for Information Interchange, American Standard Code for Information Interchange). ASCII code is a character set using 7-bit binary encoding, which includes the representation of common characters, numbers, punctuation marks, and control characters. For example, the ASCII code corresponding to the character 'A' is 65, and the ASCII code corresponding to the character '0' is 48.
With the development of computer technology, more encoding standards have emerged, such as Unicode (Unicode) and UTF-8 (Unicode Transformation Format-8 bit). Unicode is an encoding standard used to represent almost all characters in the world, using 16 or more bits to represent characters. UTF-8 is a Unicode-based variable-length encoding that uses 1 to 4 bytes to represent different characters. UTF-8 encoding is compatible with ASCII code, so characters in ASCII code are represented in the same way in UTF-8 encoding.
In programming, we often need to process and manipulate different encoded data. Here is a sample code written in Python that demonstrates how to convert a string to a different encoding format:
# 定义一个字符串
text = "你好，世界！"
# 将字符串转换为ASCII编码
ascii_text =