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Satellite radio Digital radio signals are sent from satellites in orbit around the earth to subscribers that have special radios CD-quality sound is better than normal radio More channels than regular radio SDARS providers are XM satellite radio Sirius satellite radio Commercial-free

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Protocols The set of conventions governing the exchange of data between hardware and/or software components in a communications network Built into the hardware or software you are using Govern the packet design and transmission standards Examples are: TCP/IP for LANs and internet AppleTalk for older Mac networks SIP for Voice over IP (VoIP) ...

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Error Checking: Parity Bits Used in modems & communications to verify correctness One check bit is added to 7 bit byte The check bit is defined as either odd or even For odd parity, if the data sent is correct, the parity bit plus the first 7 data bits is an odd number For even parity, if the data sent is correct, the parity bit plus the first...

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Central Processing Unit (CPU) Management (continued) Queues, Buffers, Spooling Queue: First-in, First-out (FIFO) sequence of data or programs that waits in line for its turn to be processed Buffer: The place where the data or programs sit while they are waiting To Spool: The act of placing a print job into a buffer Needed because the CPU is fa...

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Modems High-speed phone lines ISDN line DSL line Cable Modems Satellite Always-on connection using satellite dish to satellite orbiting earth Send data at 56 – 500 Kbps; receive at 1.5 Mbps Wi-Fi & 3G

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Use discretion about sending emails Emails aren’t secret They can be easily forwarded to others Check grammar, spelling to bosses, customers Don’t use email to express criticism or sarcasm Email received at work is the property of your employer Deleting email messages does not remove them everywhere Don’t neglect real personal contact

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Design patterns aim to provide ideas and recipes for sound OO software design. The origin of the idea can be traced to some influential books on architecture by Christopher Alexander (for example, The Timeless Way of Building, 1979). Hundreds of OO design patterns have been published since 1995 in books, web sites, etc.

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You also have to consider what aspects of the process that you want to improve. Your goal might be to improve software quality and so you may wish to introduce new process activities that change the way software is developed and tested. You may be interested in improving some attribute of the process itself (such as development time) and you ha...

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A (min) heap is a complete binary tree The value in each node does not exceed any of the values in that node’s left and right subtrees. In a heap, the root holds the smallest value.

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A lookup table is an array that helps to find data very quickly. The array stores references to data records (or some values). A data record is identified by some key. The value of a key is directly translated into an array index using a simple formula.

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