How do I wire a relay?

The wire spring relay typically had many contacts, each plated with palladium. The majority of those manufactured in the 1960s had twelve fixed contacts, each mated with a "make" or a "break" contact or both. These contacts had many modes of operation such as slow make, slow break, break before make, make before break, etc. They could be interconnected, with relays feeding back into each other, to create the typical combinatorial and memory logic circuits that were later used in silicon design.