A ZIF socket can be opened and closed by means of a lever or
screw. When open, there the chip may be placed in the socket
without any pressure at all, the socket is then closed,
causing its contacts to grip the pins of the chip. Such
sockets are used where chips must be inserted and removed
frequently, such as in test equipment. They are more
expensive and usually take up more space than conventional IC
sockets.
(1994-12-05)