Types of RAM Memories:

Types of RAM Memories:

RAM memory classified into two types of memories such as SRAM and DRAM memory.

SRAM (Static Random Access Memory):

Static Random Access Memory is a type of RAM that retains the information in its memory as long as power is being supplied. Static RAM provides faster access to the data and is more expensive compared with DRAM. SRAM does not need to be refreshed periodically.

Static Random Access Memory

In SRAM, each bit is stored in four transistors that form two cross coupled inverters.  Two additional transistors – types provide to control the access to the storage cells during read and write operations. Generally, SRAM uses six transistors to store each memory bit. These Storage Cells have two stable states which are used to denote ‘0’ and ‘1’.

DRAM (Dynamic Random Access Memory):

DRAM is a type of RAM module that stores each bit of data within a separate capacitor.  This is a proficient way to store the data in memory because it requires less physical space to store data.

DRAM can hold more amounts of data by a particular chip size. Capacitors in DRAM are need to be constantly recharged to keep their charge, thus, DRAM requires more power.

Dynamic Random Access Memory

Each DRAM memory chip consists of a storage location or memory cells.  It is made up of capacitor and transistor which can hold either active or inactive state. Each DRAM cell is referred to as a bit.

When DRAM cells are in active state, then charge is at high state. When DRAM cells are an  inactive state, then charge is below a certain level.

Cache Memory Orgonization:

Cache memory is a type of memory which is used to hold the frequently used data from main memory locations. The cache memory is placed close to the CPU. Cache memory starts from 00h to 0Fh. Cache memory is relatively small, consisted with 8k and 16k but it works effectively. It is a byte addressable memory and  it stores and remove only 1-bit of data. The cache memory filled from the main memory when CPUs require the instructions. The cache memory mainly used for reduce the average time to the access memory.