Which of the following memories needs refresh?
DRAMmemories needs refresh
Electronic memory that does not require refreshing is available, called static random-access memory (SRAM). SRAM circuits require more area, because an SRAM memory cell requires four to six transistors, compared to a single transistor and a capacitor for DRAM.
Dynamic random access memory (DRAM) is a type of memory that is typically used for data or program code that a computer processor needs to function. DRAM is a common type of random access memory (RAM) used in personal computers (PCs), workstations and servers.
The advantage of DRAM is the structural simplicity of its memory cells: only one transistor and a capacitor are required per bit, compared to four or six transistors in SRAM. This allows DRAM to reach very high densities, making DRAM much cheaper per bit.