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"granddaddy" - 2 õppematerjali

Minu perekond - My family
2
doc

Minu perekond - My family

READY FOR CLASSES . H E IS ALSO INTERESTED IN PHOTOGRAPHY . E VERY DAY HE TRIES TO FIND SOME TIME TO GO OUT AND TAKE PICTURES OF SOMETHING INTERESTING . H IS FAVOURITE ONES ARE VIEWS OF SOME NATURAL LANDSCAPES . H E HAS MADE QUITE A LOT OF INTERESTING PHOTOS AND HOPES TO ORGANIZE AN EXHIBITION ONE DAY SOON . I THINK HIS WORKS WILL BE WELCOMED BY SPECIALISTS AND ADVISE HIM TO GET READY FOR A PROFESSIONAL CAREER IN PHOTOGRAPHY . HE HAS NO OBJECTIONS. MY GRANDDADDY IS SIXTY -SEVEN . HE IS RETIRED NOW, BUT BEFORE RETIREMENT, HE WAS IN THE MILITARY SO HIS FAMILY HAD TO MOVE FROM ONE PLACE TO ANOTHER RATHER OFTEN . MY GRANDMA IS SIXTY -FIVE. SHE HAD ALWAYS WORKED AS A TEACHER BEFORE RETIREMENT . THIS MADE IT EASY FOR HER TO FIND JOBS AT ANY NEW PLACE THEY WOULD MOVE TO. M Y GRANDPARENTS HAVE BEEN TOGETHER FOR MORE THAN FORTY YEARS AND THEY STILL LOVE EACH OTHER .THEY ARE VERY WISE AND ALWAYS HELPFUL . I KNOW FOR SURE THAT THEY WILL

Keeled → Inglise keel
60 allalaadimist
TheCodeBreakers
946
pdf

TheCodeBreakers

linguistic functions. From this analogy, scrambler methods of modifying speech are called "ciphony" (from "cipher" plus "telephony"). The field of secret voice communication as a whole may be termed "cryptophony." Though it was only in World War II that scramblers came into widespread use, and only in that war that serious attempts began to be made to solve scrambled speech, devices to assure telephonic secrecy had been in existence almost as long as the telephone itself. The granddaddy of these was patented on December 20, 1881, only five years after Bell obtained his patent on the telephone. Its inventor, 25-year-old James Harris Rogers, an American electrical pioneer who was then chief electrician for the Capitol, wrote: "My invention consists in throwing a message sent from any transmitting instrument through two or more circuits alternately in rapid succession . . . in such a manner that anyone tapping but one of the circuits is unable to obtain anything but a

Informaatika → krüptograafia
15 allalaadimist


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