7. Difference of RAM and DRAM

-> The difference of RAM and DRAM is:

RAM - Random Access Memory - is a form of computer data storage. Takes the form of integrated circuits that allow stored data to be accessed in any order (i.e., at random).

DRAM - Dynamic Random Access Memory - is a type of random access memory that stores each bit of data in a separate capacitor within an integrated circuit. Since real capacitors leak charge, the information eventually fades unless the capacitor charge is refreshed periodically. Because of this refresh requirement, it is a dynamic memory as opposed to SRAM and other static memory.