With DesignWorks Express you can draw, save, edit and print complete, professional circuit diagrams using powerful features like bussing, multi-level Undo/Redo, and automatic gate packaging. DesignWorks Express also links to PCB design software like Pad2Pad for a completely free end-to-end design solution. Use the library of common 74XX and discrete symbols provided or create your own libraries using the built-in symbol editor.