In the digital world, there are two types of electronic chips: memory and logic. Memory chips are used to store information. Logic chips are used to manipulate, or interface with, the information contained in memory. Programmable Logic Devices (PLDs) are "off the shelf" logic chips that the customer, rather than the chip manufacturer, programs to perform a specific function. With the ability to program their own chips, customers realize two key benefits: product design flexibility and faster time to market. With today's shorter product life cycles, both of these factors can be critical determinants of a product's ultimate success. Electronic equipment manufacturers rely upon PLDs to make fast design changes, accommodate uncertain production volumes, and accelerate their product's introduction to the marketplace.