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  • Reflextion (VCSU-MEP)
    in JavaBeans where a builder tool can manipulate software components visually The tool can use reflection to obtain the properties of Java components classes as they are loaded This topic is covered in more detail in several exhibits Select from the following menu to proceed to an exhibit of interest or use n to traverse them in order a A Simple Reflection Example b Setting up to use Reflection c

    Original URL path: http://euler.vcsu.edu:7000/15371/ (2013-06-12)
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  • Memory (VCSU-MEP)
    0 to 255 or 128 to 127 However adjacent memory cells can be used in groups to form larger numbers in a way similar to large numbers being made of large strings of digits Memory has several very important properties First it is very fast the CPU may access memory in a few billionths of a second or less Second it is volatile which means that it forgets everything when

    Original URL path: http://euler.vcsu.edu:7000/1729/ (2013-06-12)
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  • CPU (VCSU-MEP)
    a command to do some small amount of work such as adding two numbers comparing two numbers moving something from one location in memory to another or continuing execution somewhere else These instructions are stored in memory just like any other data An instruction specifies what the task is to do and also what operands to work on All the CPU does is execute an instruction from memory and then

    Original URL path: http://euler.vcsu.edu:7000/1728/ (2013-06-12)
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  • Secondary Storage Devices (VCSU-MEP)
    secondary storage comes in The tradeoff for this persistence is that accessing the data is much slower for secondary storage than for memory However most of the secondary storage devices have very large capacity compared to memory Secondary storage is usually some type of magnetic or optical media that will retain its data for long periods of time Magnetic media includes floppy disks fixed or hard disks and magnetic tape

    Original URL path: http://euler.vcsu.edu:7000/1733/ (2013-06-12)
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  • Communicating with people (VCSU-MEP)
    are mostly one way The computer writes to a monitor but does not read much from it while the keyboard is read from but not written upon These days most computers do not have a local printer Instead they access

    Original URL path: http://euler.vcsu.edu:7000/1734/ (2013-06-12)
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  • Communicating with other machines (VCSU-MEP)
    machine communication A modem enables two way communication over telephone lines A network card also known as an ethernet card or NIC allows much higher speed communication over a Local Area Network Of course both of these need supplementary software

    Original URL path: http://euler.vcsu.edu:7000/1735/ (2013-06-12)
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  • Computer Simulator (VCSU-MEP)
    shown except for its status This status may be Idle with obvious meaning It may also be in the process of a fetch that is the transfer of data from memory to the CPU The fetch status also shows the memory location being obtained The other status is to Store that is transfer data from the CPU to the memory It will also show the address to be changed The

    Original URL path: http://euler.vcsu.edu:7000/15799/ (2013-06-12)
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  • Low Level Languages (VCSU-MEP)
    in the memory of the computer Therefore computers built after that followed the von Neumann approach Like the data instructions were merely stored in binary in the machine s memory Since computers were so new little thought was given to how the programming process should work The first programs were created in Machine Language Machine language is just a series of binary digits where each instruction has several parts This

    Original URL path: http://euler.vcsu.edu:7000/642/ (2013-06-12)
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