Banking Computers IBPS RRBs Officer CWE Main Exam 2016

  • question_answer Which company first invented MODEM?

    A)  IBM    

    B)  AT&T

    C)  Microsoft         

    D)  Seagate

    E)  Betel

    Correct Answer: B

    Solution :

    [b] It was in 1962 that the first commercial modem, the bell 103, was released by AT&T. Bell 103 was also the first modem with full-duplex transmission frequency-shift keying or FSK and had a speed of 300 bits. Per second or 300 bauds. Be 103 was followed by Bell 212, which reached speeds of 1200 bits per second.


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