HPA
HPA means
Physiology Hypothalamic-Pituitary-Adrenal axis: The hypothalamus, pituitary and adrenal glands work together to regulate hormone levels and maintain homeostasis.
Computer Host Protected Area(HPA) is a reserved area on the data storage that is outside file system of the operating system running. Such area is hidden from the operating system and the file system, and it is normally unable to view the content except with special tools. High Performance Addressing is an LCD display technology, a passive-matrix display technology which provides better response rates and contrast than traditional LCD displays. They aren't as crisp or fast as active-matrix (TFT) displays, they're a lot cheaper to produce. HPA was used some years ago in entry level notebooks, but now it's practically disappeared as TFTs are less expensive.
Satellite dish High Power Amplifier, used in two-way satellite internet (this is the transceiver part).
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