Engelbart, seated at a custom workstation, controlled a 30-minute live demonstration featuring:
Without additional context, the is the most common idiomatic usage. 1st mouse
The first computer mouse, conceived by Douglas Engelbart in 1961 and publicly demonstrated in 1968, represents a watershed moment in human-computer interaction. Prior to its invention, computer interfaces were dominated by alphanumeric keyboards and batch processing. This paper details the conceptual genesis, technical construction, operational principles, and historical debut of the original mouse. It further analyzes how this rudimentary wooden device catalyzed the graphical user interface (GUI) revolution, influenced subsequent input devices, and established principles of direct manipulation that underpin modern computing. Engelbart, seated at a custom workstation, controlled a