octal code

例句：

1. 1. The computer uses a binary system for its operating system.
   计算机使用二进制系统作为其操作系统。
2. 2. The octal code is used to represent the color of the LEDs.
   八进制代码用于表示LED的颜色。
3. 3. The octal code was chosen because it is easier to remember than the binary code.
   选择八进制代码是因为它比二进制代码更容易记忆。