RAM is classified into 2 major types:

- DYNAMIC RAM
- STATIC RAM

DYNAMIC RAM


Dynamic RAM (DRAM) Dynamic has the lowest cost and is the cheaper so thats why is the most common type of memory in the world. its cheaper because it has a slower access speed compared to SRAM and the information stored it holds must be refreshed frequently, which needs a continuous uninterrupted flow of electricity.

DRAM is made up of an array of chips arranged on a small board called a stick: this is a stick of memory:
16p1633-dram.gif
the stick is placed in the computer's mother boards through a slot. the number of transistors making up the chps on a stick of DRAM determines the amount of information that can be stored, measured in megabytes (MB)

there are 2 types of memory sticks:

1. SIMM (SINGLE INLINE MEMORY MODULE) - this is the old type of DRAM that was used

2. DIMM (DUAL INLINE MEMORY MODULE) - this is the newest and mostly used today, it connects thru pins along both edges whcih can move more data into and out of the chips.



STATIC RAM


the other type of ram is called static ram, SRAM is more expensive because it is harder to manufacture. but SRAM gives you faster access to information because the memory does not need to be refreshed constantly and the chip can function for short periods without electricity. SRAM is the type of physical memory used for Level 2 processor caches and any other memory chips attached directly to the main circuit boards of the computer. But is it not as common ad DRAM.

what else do you want to know about RAM?