Chipset is an array of integrated circuits meant to perform in real-time constraints and dedicated functions. Expensive smartphones tend to have better chipset, which performs more advanced operations.
Kyro Qualcomm Snapdragon 820
It stands for a Central Processing Unit. It's generally known as the brain of the device. In short, the CPU process the lines of tasks assigned by the operator.
quad core processor
The Term GPU stands for the graphics processing unit. It is a single-chip processor meant to boost up object alteration, image production, and 3D Motion by manipulating the memory.
Random Access Memory
It's a reserved memory in Smartphones, laptops, tablets, e.t.c, allowing to save all the data pertaining to the applications, videos, images, and other files in one place.
It's a medium or location putting the memory card.
Light sensor, Gyroscope, eCompass, Proximity sensor, Accelerometer, Fingerprint sensor, Barometer, IR blaster.