Molecular electronics involves the use of single or small packets of molecu
les as the fundamental units for computing. While initial targets are the s
ubstitution of solid-state wires and devices with molecules, long-range goa
ls involve the development of novel addressable electronic properties from
molecules. A comparison of traditional solid-state devices to molecular sys
tems is described. Issues of cost and ease of manufacture are outlined, alo
ng with the syntheses and testing of molecular wires and devices.