What programming languages are used in the Apple series?

 Apple's operating systems and many of its applications are written in a variety of programming languages, including C, C++, Objective-C, Swift, and others. These languages are used for different purposes within Apple's software ecosystem.

For example, C and C++ are often used for low-level system components, such as the kernel and device drivers, while Objective-C and Swift are used for developing applications for the macOS and iOS platforms.

Apple also uses other languages for specific purposes, such as the Python programming language, which is often used for scripting and automation tasks. Additionally, Apple has developed its own programming language called Swift, which is designed for building applications for the iOS, macOS, watchOS, and tvOS platforms.

Overall, Apple uses a variety of programming languages to power its operating systems and applications, and the specific languages used can vary depending on the specific purpose and context.