Laptop memory.
Five types of computer memory are: Dynamic Random Access Memory (DRAM) Synchronous DRAM (SDRAM) Static RAM (SRAM) Double Data Rate RAM (DDR) Rambus DRAM (RDRAM)
The 5 types are: SIMM DIMM SODIMM SORIMM RDRAM The basic types are volatile memory such as RAM memory and 'permanent' memory such as hard drives USB, external drives and CD/DVDs