early 12c., one of the ecclesiastical princes who constitute the sacred college (short for cardinalis ecclesiae Romanae or episcopus cardinalis), from Latin cardinalis principal, chief, essential (see cardinal (adj.)). Ecclesiastical use began for the presbyters of the chief (cardinal) churches of Rome.
In 1889, the rotary telephone dial was invented by Almon B. Strowger , a Kansas City undertaker. The first dial exchange was installed at La Porte, Indiana, in 1892. In 1943, Philadelphia was the last major area to give up dual service.
Dr. Martin Cooper is the person credited with both inventing the modern cell phone as well as making the first cell phone call in New York City, New York in April 1973. A related invention is the cave radio phone invented by Nathan Stubblefield who was awarded a patent for the idea in the early 20 th Century (1908).Since his work does not provide the technology behind modern cell phones, he is not given credit for inventing the cell phone. related invention is the cave radio phone invented by Nathan Stubblefield who was awarded a patent for the idea in the early 20 th Century (1908). Since his work does not provide the technology behind modern cell phones, he is not given credit for inventing the cell phone.