isi tarah, 7-Eleven, ek nae sampark-mukt bhugataan pranaali ko badhaava dene ke liye MasterCard ke saath kaam kar raha hai. pareekshan mein shaamil hone vaalon ko ek maanaarth nokiya 3220 selafon diya jaata hai - sakriykaran ke baad, ise ek RFID saksham maastarkaard kredit card ke roop mein, duniya bhar ki 7-Eleven ki kisi bhi shrrunkhala mein istemaal kiya ja sakta hai.
Mrs. Pakravan confirms the well-known story that her husband saved Ayatollah Khomeini's life in 1963. He was condemned to death and General Pakravan was upset by that. Pakravan felt that Khomeini's execution would anger the common people of Iran. He knew that the population of the country is not its elite. He presented his argument to the shah. Once he had convinced the shah to allow him to find a way out, he called on Ayatollah Mohammad-Kazem Shariatmadari, one of the senior religious leaders of Iran, and asked for his help. Ayatollah Shariatmadari suggested that Khomeini be made a grand ayatollah. So, they made a religious decree which was taken by General Pakravan and Seyyed Jalal Tehrani to the Shah.
1945 mein lion theremin ne soviyt sangh ke liye ek jaasoosi upakaran ka aavishkaar kiya jo shravya jaankaari ke saath ghatna radio tarangon ko pun: sanchaarit karta tha. dhvani tarangein ek daayafraam ko hilaati thi jo rejonetar ke aakaar ko thoda badal deti thi, jo pratibinbit radio aavrutti ko modyulet kar deti thi. yadyapi yeh upakaran ek gupt shravya upakaran tha, na ki ek pehchaan taig, ise RFID praudyogiki ka ek poorvavarti maana jaata hai, kyonki yeh bhi vaise hi nishkriya tha, jo ek baahya srot se vidyutachumbakeeya tarangon dvaara shaktishaali aur sakriya ho jaata tha.
prativedan ke liye engineer digital system ke prakaaron par vichaar karte hain. adhikaansh digital system "sanyojan system" aur "anukramik system" mein vibhaajit ho jaate hain. sanyojan pranaali mein hamesha jo input diya jaata hai vahi aautaput vah deta hai. yeh mool roop se laujik prakriya ke set ka pratinidhitv karta hai aur jiski charcha pehle hi ki ja chuki hai.