If you’ve ever looked into purchasing a NAS device or server‚ particularly for a small business‚ you’ve no doubt come across the term "RAID." RAID stands for Redundant Array of Inexpensive (or sometimes "Independent") Disks. In general‚ a RAID-enabled system uses two or more hard disks to improve the performance or provide some level of fault tolerance for a machine—typically a NAS or server. Fault tolerance simply means providing a safety net for failed hardware by ensuring that the machine with
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and solid-state drives (SSD) in terms of: a. Speed b. Volatility c. Access methods d. Portability e. Cost f. Capacity A magnetic tape is a data storage device which typically stores digital information. The magnetic tape uses digital recording methods and is shaped as a cassette or a cartridge. The tape driver is a device that records the data on to the magnetic tape. Typically‚ the speed of the magnetic depends on the capacity of the drive which also happens to depend on the cost. “Legacy
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points) Suppose that only 50GB of your personal computer’s 120GB hard-disk drive is empty. Which storage media would you use to backup your data? Explain your answer. Question 4 (5 points) Suppose a machine has 20GB of storage space available on a hard disk and receives data over a telephone connection at the rate of 14‚400 bps. At this rate‚ how long would it take to fill the available storage space? Question 5 (5 points) Describe and illustrate the von Neumann architecture. Explain the
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is an electronic device operating under the control of instructions stored in its own memory that can accept data‚ manipulate the data according to specified rules and produce results and store result for future use. Four fundamental functions are: 1. 2. 3. 4. Input Processing Output Storage The computer comprises of a variety of hardware components. These include input device‚ output device‚ a system unit‚ storage device and a communication device. Input Device An input device is any hardware
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What is a computer: A computer is an electronic device that executes the instructions in a program. A device that accepts data‚ processes the data in accordance with the stored program‚ generates results and usually consists of input‚ output‚ storage‚ Airthmatic logic and control units. A computer has four functions: a. accepts data Input: Data or information written into the computer by user The Information Processing Cycle b.processes data Processing: The calculations performed according
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HISTORY OF COMPUTER Abacus - The First man-made computing device. - It can perform addition and subtraction - invented in China Pascal’s calculating machine/Pascaline - The first mechanical calculator - Invented by Blaise Pascal - Can perform addition & subtraction Leibnitz calculator - First general-purpose calculating machine - Extended version of Pascal Calculating machine - Can perform multiplication and Division - Invented by Gottfried Leibnitz Automatic
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The job titles of persons directly responsible for developing application software include systems designer‚ application programmer‚ and systems analyst. Review Questions 1. In what way(s) is the knowledge needed to operate complex devices different from the knowledge needed to acquire and configure them? Operating knowledge is generally less detailed. Acquisition and configuration requires a more detailed understanding of technology to address issues of compatibility and suitability
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doing schoolwork‚ which input and output device combination would be best from the options below (considering the best combination of cost‚ screen resolution‚ and keyboard design)? a gaming keyboard and a 27" LCD monitor a foldable keyboard and a 15" LCD monitor a wireless keyboard and a 24" LED monitor a split-style keyboard and a 30" LED monitor Question 2 Select one answer. 10 points In a situation where a handicapped person can only input data into the computer using a stylus or light
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output‚ and storage devices along with speeds of a computer. You did a good job of getting the reader ’s attention and giving the reader a "road map" to your paper. Data Input Devices When personal computers first came out‚ the only input device that was available was the keyboard and mouse. Today‚ there are more input devices to choose from than the basic keyboard and mouse combination. I would have combined these two sentences into a more complex single sentence. These devices are Voice-recognition
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common property of mass storage systems based on magnetic or optic technology is that physical motion‚ such as spinning disks‚ moving read/write heads‚ and aiming laser beams‚ is required to store and retrieve data. This means that data storage and retrieval is slow compared to the speed of electronic circuitry. Flash memory technology has the potential of alleviating this drawback. In a flash memory system‚ bits are stored by sending electronic signals directly to the storage medium where they cause
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