Coming in static and dynamic varieties, for 10 points, identify this volatile type of memory used for temporary data storage, often contrasted with read-only memory.
One type of this construct transfers data on both the rising and falling edges of the clock signal and is known as the "double data rate" variety of this. One of the two most basic varieties of this item stores bits as the states of flip-flops while the other variety stores each bit in a unique capacitor. Coming in static and dynamic varieties, for 10 points, identify this volatile type of memory used for temporary data storage, often contrasted with read-only memory.
One type of this construct transfers data on both the rising and falling edges of the clock signal and is known as the "double data rate" variety of this.
{RAM} [or {random}-{access} memory; prompt on {memory}; accept {DRAM} or {dynamic}