sentences:  Dynamic random-access memory
  
  Dynamic random-access memory (DRAM) is a type of random access semiconductor memory that stores each bit of data in a memory cell consisting of a tiny capacitor and a transistor, both typically based on metal-oxide-semiconductor (MOS) technology.The capacitor can either be charged or discharged; these two states are taken to represent the two values of a bit, conventionally called 0 and 1.