• The Basics of the Binary Code



    The basics of the binary code  


          It all starts with 1’s and 0’s (binary code)


          A bit is either a “1” or a “0”


          A byte is a sequence of bits, usually 8 bits.


          A “bit” is denoted by a lower case “b” while a “byte” is denoted by an upper case “B”.


          The speed of a communication link is typically measured in bits per second (bps).


          The size of a data file is typically measured in bytes.


          Confusion – If a 3 MB file is sent over a 3 Mbps communication line, it doesn’t take one second, it actually would take around 8 seconds.  


    Kilobyte         - 1,000 Bytes

    Megabyte     - 1,000,000 Bytes

    Gigabyte       - 1,000,000,000 Bytes

    Terabyte       - 1,000,000,000,000 Bytes


    Interesting Facts


          A standard MP3 music file is @ 3 to 4 MB

          A 2 hour movie is @ 1.5 GB (1,500 MB)

          A 10 minute HD YouTube video can be over 1GB (1,000 MB)

          A HD ITV class streams at 1,472Kbps (1.5Mbps)


    Scary Fact


          If you have a 15Mbps internet connection, and you can attain 100% throughput, downloading or streaming a 10 minute HD YouTube video would take approximately 9 minutes! And that is not allowing any additional internet traffic.  



    The calculation


    The maximum bandwidth for your school district is 15Mbps - 15,000,000 bits/second. To convert it to Bytes per second you have to divide it by 8.




                            15,000,000 bits/second = 1,875,000 Bytes per second maximum download speed



    If someone is going to download a 1GB file (1,000,000,000 bytes) you have to divide the file size by the maximum download speed of you bandwidth, in Bytes.


                                             1,000,000,000 Bytes    =  533 seconds

                                         1,875,000 Bytes/second


    533 seconds mathematically translates into 8.88 minutes.

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Last Modified on January 9, 2013