1, American Professional Golf Association.
This organization was founded in 19 16, and its headquarters is in Garden City, Palm Beach, Florida. At present, the association has nearly 30,000 members and students, and has offices in 465,438+0 regions in the United States. In addition to promoting and developing golf, the association also organizes or sponsors a number of high-level golf events every year, including PGA Championship and National Professional Golf Championship.
2, glyceraldehyde phosphate (glyceraldehyde phosphate)
This is an organic compound with the molecular formula of C3H5O6P, which plays an important role in photosynthesis. PGAL is the first stable organic substance produced by the reaction of carbon dioxide and ribose diphosphate, and it is also one of the intermediate products produced by the decomposition of glucose into two kinds of pyruvate. These reactions are the basic metabolic processes in organisms, so PGAL plays a vital role in organisms.
3. Needle grid array.
This is a common integrated circuit packaging method. In this package, there are many pins arranged in a square array at the bottom of the chip, which can be inserted into corresponding sockets or soldered to the circuit board. PGA has the advantages of many pins, large pin spacing, good heat dissipation performance and high reliability, so it is often used in high-density and high-performance chips such as CPU and FPGA.
4. Programmable gain amplifier.
This is a very universal amplifier. Its magnification is controlled and adjusted by digital signal or software. It is often used in data acquisition, signal processing, sensor amplification and other fields. PGA can automatically or manually adjust the gain according to the size of the input signal and the requirements of subsequent circuits, so as to improve the measurement accuracy and dynamic range.