Instead of graphical interfaces and mice, computers relied on which method for instruction?

The command line interface (CLI) is the method that was primarily relied upon for user instruction before the widespread adoption of graphical interfaces and mice. A command line interface allows users to interact with the computer by typing specific commands into a text-based interface. This interaction provides a direct way to execute programs, manipulate files, and manage system resources without the need for graphical elements or pointing devices.

In the context of computing history, the command line interface was essential in the early development of operating systems. Users needed to understand specific syntax and commands to utilize the computer effectively, which cultivated a deeper level of engagement with the system's functionalities. This method required users to have knowledge of the available commands and their parameters, making it a powerful tool for experienced users and system administrators.

While touch interfaces, graphical user interfaces, and voice command interfaces are important in modern computing, they represent later advancements in user interaction. Touch interfaces allow for tactile engagement, graphical user interfaces enable visual navigation through icons and windows, and voice command interfaces facilitate hands-free operation. However, all of these choices evolved as enhancements to the foundational command line interface, which laid the groundwork for how users would communicate with computers.