Low-insertion-force sockets (LIF) are literally IC sockets specially designed so the insertion force is low. As the pin count increases (e. g PGA or SPGA vs DIP) low insertion force changes from something handy for chips that are changed frequently to an almost essential feature. A pin grid array, often abbreviated PGA, refers to the arrangement of pins on the integrated circuit packaging A staggered pin grid array (SPGA refers to a style of arranging pins on an Integrated circuit package In Microelectronics, a dual in-line package (DIP, sometimes called a DIL package is an electronic device package with a rectangular housing and two parallel rows
As with an ordinary IC socket the integrated circuit is simply pushed into the socket, and levered out when removing. Most modern motherboard processor sockets are now zero insertion force (ZIF) rather than LIF. A motherboard is the central or primary Printed circuit board (PCB making up a complex electronic system such as a modern Computer or Laptop ZIF is an acronym for zero insertion force, a concept used in the design of IC sockets invented to avoid problems caused by applying force upon insertion and The reason many motherboards are going to the ZIF style rather than the LIF style is because the higher pin count meant that even with a low insertion force design the overall insertion force of the huge numbers of pins becomes too high for the chip to be easily inserted and removed.
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