Credit: ccarlstead CC-BY 2.0. Playing cards developed their four-suit design in the 1480s in France. By the late 1800s, factories mass-produced standard English playing cards that featured diamonds, hearts, clubs and spades, a design that prevails as of September 2014. Older cards were based on Latin suits of cups, swords, coins and rods.
Definition - What does Spread Spectrum mean? Spread spectrum is a technique used for transmitting radio or telecommunications signals. The term refers to the practice of spreading the transmitted signal to occupy the frequency spectrum available for transmission.
Application Note AN014 SWRA077 Page 3 of 7 Carrier frequency Time Dwell time Blanking interval Figure 1 Frequency hopping terminology Since spread-spectrum technology has its roots in military applications, much of the terminology refers to enemy âjammersâ of varying complexity. In commercial systems, intelligent jamming is not a primary threat.