The Ball Grid Array, BGA, uses the underside of the package, where there is a considerable area for the connections. SMD BGA Ball Grid Array package diagram. The pins are placed in a grid pattern (hence the name Ball Grid Array) on the under-surface of the chip carrier.
* The cerebellum (infratentorial or back of brain) is located at the back of the head. Its function is to coordinate voluntary muscle movements, and to maintain posture, balance and equilibrium. The cerebellum also affects emotions and higher-level cognitive functions.
What are the parts of the brain? The main parts of the brain are the frontal lobe, temporal lobe,  occipital lobe, parietal lobe, hypothalamus, cerebrum, brain stem  ,and cerebellum. In addition, the brain â¦contains the corpus  callosum, pituitary gland, hypothalamus, and thalamus. The medulla  oblongata and pons are parts of the brain stem.