Introduction to computers as a tool for architects and its applications in 2D and 3D drawing. Topics for 2D include: The CAD interface, Command syntax, Drafting theory, Selecting objects, Inserting objects, Correcting errors, Object snap, Zooming. Measuring objects, Panning, Text, Layers, Editing objects, Line types, Line weights, manipulating objects, Grips, Construction lines, Crosshatching, Blocks, dimensioning, reference files, special objects and plotting. Topics for 3D include: Extrusions, viewing the model, world and user Coordinate systems, Wire frame models, Modifying and editing wire frames, Model space, Paper space, scaling views, Perspective views, 3D surface modeling, 3D faces, 3D Polygon meshes, Solid shapes, 3D solid models, Sectioning, Slicing, Shading and rendering solid models.