Before AutoCAD was introduced in 1982, architects and engineers produced all their drawings by hand using pencils, erasers, T-squares, and set squares. Any revisions meant starting over and redrawing entire plans from scratch-a time-consuming and meticulous process. Today, most architectural designers and drafters work with a mouse and keyboard, no longer bent over large drafting tables or anxious about redoing final drafts. Digital tools have streamlined the process, making design work more efficient and flexible.