types of computer memory
Hard Disk Drive. The hard disk drives are among the most common types of computer memory. They can store the data and information long term as this is where you store your music, games, documents, and the like. Hard drives work much like records. They are spinning platters that have arms with head to touch the different parts of it.
DRAM (Dynamic Random Access Memory) The most common type of computer memory. DRAMs hold data for a relatively brief period of time and need to be refreshed at regular intervals. DRAMs are measured by access time (in nanoseconds, or ns) and storage capacity (in megabytes, or MB).
Flash Memory. Flash memories are types of computer memory that works like RAM but are stable. Even when there is no power, the information and data saved in them are kept safe and secure. They cannot, however, keep as much data and information like the hard disk drive.
Function: RAM is the main and short term memory of the computer. RAM chips store data in. rows and columns in an array of transistors and capacitors and use a memory-controller circuit to. retrieve information located at specific addresses.