Study Guide - Hardware Criteria Hard Drive/Secondary Memory...

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Unformatted text preview: Hardware: Criteria Hard Drive/Secondary Memory Primary Memory/Main Storage Type of energy Uses magnetic energy and is non-volatile, holding data permanently unless otherwise instructed. Also can use optical energy (larger than magnetic energy) Uses electricity and is volatile. It loses its stored data immediately when power is cut off Size GB, TB, or higher MB, GB, or TB Speed Slower than RAM Very fast, RAM Criteria Magnetic Storage Media Optical Storage Media Type of Memory Secondary memory Secondary memory Device Floppy disks, magnetic strips CDs, DVDs Speed Moore’s Law—the number of transistors that can be placed inexpensively on an integrated circuit has doubled approximately every two years • The CTO would have to take into consideration that the hardware in consideration will very soon become outdated and new hardware will be on the market. This technology is also becoming cheaper since there is always new technology in research and development. The CTO would have to look at the current speeds, sizes, and costs of the hardware in question and determine whether or not it would be beneficial and cost efficient to replace the existing hardware within the organization. • The software development officer would have to take into consideration the fact that the technology is improving rapidly and would have to develop software that is compatible with the new hardware that is also constantly being developed. Software: Criteria Closed Source Software Open Source Software Availability Owned by one person or organization and available through retail outlets Code is open to the public, any one can access, use, or edit Cost Sold from organizations. Microsoft thrives off of sales of their closed source software Free Users Widely used by most all computer users Generally used by the writers of the code Developers Professionals trained in software development and computer programming Developers do not have to be professionally trained, or even educated in programming or development. A range of both knowledgeable and uneducated creators. Service/Support The developing organizations have support systems through retail stores, online help, and service call centers. Software is tested and reviewed before being released. Accompanied by user guides and manuals. Users rely on online community via blogs and forums. Software is not reviewed by experts before release. Not legally required to provide user manuals and guides. Security More secured due to development within a controlled environment....
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This note was uploaded on 02/24/2010 for the course MIS 2301 taught by Professor Dedeke during the Spring '09 term at Northeastern.

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Study Guide - Hardware Criteria Hard Drive/Secondary Memory...

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