This is my first video.In this i have discussed about Memory,RAM,Memory Controllor,Cache memory,Virtual Memory RAM is the main memory which stores the data for a short period of time.the system uses the RAM to store temporary instructions and data needed to complete tasks. This makes the system’s CPU to access the instructions and data faster. Memory is attached to the motherboard in the form of a chip. RAM chips stores information untill the computer has electrical power.when you shut off your system, all the data stored in RAM are lost. The chipset contains several controllers that control how information flows between the CPU and other components in the system. The memory controller is part of the chipset and provides the flow of information between memory and the CPU. A bus is a data path that contains parallel wires and connects the CPU, memory and other devices. The bus architecture determines how much and how fast data can move around