Description: Dynamic RAM (DRAM) is a type of volatile memory that stores each bit of data in a separate capacitor within an integrated circuit. Unlike static RAM (SRAM), which uses bistables to store data, DRAM requires constant refreshing to maintain information, as capacitors tend to discharge over time. This characteristic makes DRAM denser and more suitable for applications requiring large amounts of memory, such as computers and mobile devices. DRAM is organized in rows and columns, allowing for quick access to stored data. Its speed and storage capacity make it an essential component in the architecture of modern microprocessors, where it is used to store temporary data and running programs. DRAM is crucial for overall system performance, as it provides the necessary space for the processor to quickly access the information it needs to execute tasks. Its design and operation have evolved over the years, enabling higher speeds and capacities, which has been critical for the development of advanced technologies in computing and electronics.
History: DRAM was invented in 1966 by Robert Dennard at IBM. Its development marked a significant advancement in memory storage capacity, allowing computer systems to handle more data efficiently. Over the years, DRAM has evolved through several generations, including SDRAM, DDR, DDR2, DDR3, DDR4, and DDR5, each improving speed and energy efficiency.
Uses: DRAM is primarily used in computers, servers, and mobile devices such as smartphones and tablets. Its ability to temporarily store large volumes of data makes it ideal for applications requiring quick access to memory, such as gaming, multimedia applications, and operating systems.
Examples: Examples of DRAM include DDR4 memory modules used in desktop and laptop computers, as well as LPDDR4 memory used in mobile devices. These types of DRAM are common in most modern computing systems.
