Founded in 1983 and headquartered in California, Altera is a company specializing in the design, production and sales of high-performance, high-density programmable logic devices (PLD) and corresponding development tools. Since the establishment of the company, Altera company has always been in the leading position in the same industry: in 1984, Altera company launched ep300 series, the first erasable programmable logic device in the world, becoming the first PLD device supplier in the world, and also successfully developed the first PC based development system. At present, Altera has more than 500 kinds of PLD devices in various packages, which can meet different needs of users. At the same time of providing devices, Altera company can also provide its users with perfect development system and good after-sales support services. For example, Altera's MAX + PLUSII software, which integrates software editing, debugging and device programming, is the most popular development system in the field of programmable devices. The assess program of the company can provide users with all the seller's product information supporting the devices of Altera company, which further optimizes the development environment of MAX + PLUSII.