What is a cache memory Write about the three levels of cache

What is a cache memory? Write about the three levels of cache memories (L1, L2, L3) and compare them. 5. Compare Arduino Mega, myRIO, and Raspberry Pi microcontroller/computing platforms. Which platform would.you consider for a project in future? Why? 6. Write about the following sensors and their applications: Gyroscope Accelerometer Magnetometer

Solution

4.

Cache memory is a random access memory and it is a  volatile computer memory that provides high-speed data access to a processor and stores frequently used computer programs, applications and data. It stores and retains data only until a computer is powered up.

L1 cache is a very fast memory when compared to L2 and L3 and L1 is small when compared to L2 and L3. L1 cache uses the high-speed SRAM (static RAM).

L2 cache: When required information is not found in L1 cache then it is look into L2 cache which is larger than L1 cache but L2 cahe is smaller than L3 cache but it is faster than L3 cache and slower than L1 cache.

L3 cache: When required information is not found in L1 and L2 cache then it is look into L3 cache which is larger than L1 cache and L2 cache but L3 cahe is larger than L1 and L2 cache but it is slower than L1 and L2.