Dynamic Random-Access Memory (DRAM) is a type of computer memory that stores data in a dynamic way, meaning it needs to be refreshed thousands of times per second to maintain the information. Each memory cell in DRAM consists of a capacitor and a transistor, which together hold a bit of data. This design allows for high density, making DRAM a popular choice for main memory in computers and other devices. DRAM is slower than some other types of memory, like Static Random-Access Memory (SRAM), but it is more cost-effective and can store more data in a smaller space. Because of its characteristics, DRAM is widely used in personal computers, servers, and mobile devices, providing the necessary memory for running applications and processing tasks.