Idaho based Micron Technology has entered into an agreement to acquire bankrupt Japanese DRAM maker Elpida for $2.5 billion. Elpida is remains a key component supplier for Apple’s new iPad and iPhone 4S, and will propel Micron to the number 2 position in memory chip fabrication behind only Samsung with a 24 percent share of the global market. Like a number of its Japanese compatriots, Elpida had struggled to cope with the challenge posed by the Korean tech giant and filed for bankruptcy protection in February after it could not pay back $1.89 billion in debt due in April.