storage devices. Two main categories of storage technology used today are magnetic storage and optical storage. Primary magnetic storage o Diskettes o Hard disks (both fixed and removable) o High capacity floppy disks o Disk cartridges o Magnetic tape Primary optical storage o Compact Disk Read Only Memory (CD ROM) o Digital Video Disk Read Only Memory (DVD ROM) o CD Recordable (CD R) o CD Rewritable (CD RW) o Photo CD Magnetic Storage Devices Purpose of storage devices à to hold data
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3 Implementation Support 3.1 Hardware‚ Software‚ Facilities‚ and Materials 3.1.1 Hardware • Computer • Pentium Dual Core Processor or Above • 2 Gigabyte RAM or Above • Hard Disk Drive 1 Gigabyte space or Above • Internet Connection • This Car Rental System is owned and used by RCTR Tourist Transport ‚copy write 2013‚ copying this website is strictly not allowed. • Maintenance Agreement • Admin should pay the necessary fees to make their website alive. • Admin should keep their
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FINANCIAL PLAN For January 2013 SUMMARY_____________________________________________________________________________________ Total Income 20‚000‚000 ------------------------------------------------- Total Expense 11‚968‚500 INCOME DETAILS ------------------------------------------------- Tuition Fee 20‚000‚000 ------------------------------------------------- 20‚000 x 1000 students ------------------------------------------------- TOTAL: 20‚000‚000 EXPENSE DETAILS
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Video 1.06 Storage Devices Hard Drives Hard drives are comprised of platters Read/Write heads for each platter Read and write on top and bottom of platter Never exposed to magnets Data loss may occur 137 GB Limit Hard Drive size limited to 137GB Not a physical limit Limited by address the system can support 28 bit communications limited to 268‚435‚555 addresses equates to 137 GB Flash BIOS to upgrade hard drive interfaces PATA‚ SATA‚ SCSI‚ USB‚ and FireWire most common is the
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animated)‚ photographs‚ sound‚ video clips. Chapter 2 Test Yourself (page 10) A B C D E F G H hardware‚ software (or vice versa) programs backing quick GIGO information‚ searching peripheral microprocessor Things to do (page 11) 1 (a) Keyboard (b) Floppy disk
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1995 Section 5 describes how magnetic disks are to be sanitized via overwriting. Within Section 5 it states‚ “To clear magnetic disks‚ overwrite all locations three (3) times (first time with a character‚ second time with its complement‚ and the third time with a random character)” (United States‚ 1995). It would seem a three or seven pass wipe would be sufficient‚ but this level of wiping is not considered necessary today. The density of tracks in hard drives over 15GB in size‚ which were built
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of storage. If your computer’s CPU had to constantly access the hard drive to retrieve every piece of data it needs‚ it would operate very slowly. When the information is kept in memory‚ the CPU can access it much more quickly. Most forms of memory are intended to store data temporarily. As you can see in the diagram above‚ the CPU accesses memory according to a distinct hierarchy. Whether it comes from permanent storage (the hard drive) or input (the keyboard)‚ most data goes in random access
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etc 2. Any form disk storage i.e. portable hard disk‚ pen disk etc are NOT allowed to be brought into the exam hall. INSTRUCTIONS TO CANDIDATE 3. Answer ALL FOUR (4) questions. Follow the instructions in each question carefully. 4. Answer all questions in INVENTOR 2010 or 2009 versions. Make a folder in your name in the desktop and save all your works (ipt‚ iam‚ ipn & dwg or idw files) in that folder for subsequent transferred to Lecturer’s computer hard disk for evaluation.
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represent the number123456789? D. The binary equivalent to123456789 8. Which of the following is not a feature of a file system that might be used with a hard disk dirve? A.An actuator arm 9. A student writes a report using a word processor‚ saving the repot in a file called my_report. The student stores the file on his laptop hard disk drive. Later‚ he pasts the file on a file-sharing site for a classmate to review the report. Then‚ he copies an updated version of the file to a flash drive
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form part of the operation system. The BIOS makes sure the components that all components are working properly it tests them all in the boot up and make sure it is properly connected. IDE Controller: An IDE controller is an interface what allows the hard drive to communicate with the motherboard; it is also a parallel device. SATA controller: A SATA controller is a more modern version the IDE controller accept it is a serial device. Power supply: A power supply is the power of the computer for example
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