Maintaining Computer Systems

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1. A glitch is a short-lived fault in a system. Computer glitches are often only a temporary disruption. The most common causes are errors within the operating system and defects in a piece of software.


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2. Random-access memory is a form of computer data storage that stores data and machine code currently being used. A random-access memory device allows data items to be read or written in almost the same amount of time irrespective of the physical location of data inside the memory.


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3. CMOS is the term usually used to describe the small amount of memory on a computer motherboard that stores the BIOS settings.


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4. ESD stands for Electrostatic discharge. It is the sudden flow of electricity between two electrically charged objects caused by contact or an electrical short.


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5. Expansion board is a printed circuit board that can be inserted into an electrical connector, or expansion slot, on a computer motherboard.


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6. Authentication is the process of identifying an individual, usually based on a username and password. Authentication is distinct from authorization .


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7. ECC stands for Error Correcting Code Memory. It is a memory system that tests for and corrects errors automatically, very often without the operating system being aware of it.


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8. Modern hard drives have Self-Monitoring, Analysis and Reporting Technology (SMART) commands that provide information about internal error conditions, e.g., spin retry counts, bad sector counts, etc.


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9. A daughterboard, daughter card, mezzanine board or piggyback board is an expansion card that attaches to a system directly. Daughterboard's often have only internal connections within a computer.


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11. If there is no idea of why your computer started overheating, open its case and check that all the fans are running. If CPU is overheating, its heat sink may not be seated correctly or its thermal paste may be old.


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12. Red Screen of Death may also refer to an error message used on the PlayStation systems. Blue Screen of Death is an error screen displayed on a Windows computer system after a fatal system error.


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13. Followings steps should be taken to maintain computer system: Back up data, Clean dust from your computer, Clean up your cabling, Organize your installation disks, Run antivirus and spyware scans regularly, Clean up your software, Clean up your OS, Update everything.


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14. Computer maintenance is the practice of keeping computers in a good state of repair. A computer containing accumulated dust and debris may not run properly.


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15. The Digital Millennium Copyright Act leaves computer-maintenance activities. The copies of copyright files may be made in the course of maintenance provided and they are destroyed afterwards.


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16. A patch is a software update comprised code patched into the code of an executable program. When major maintenance such as patching is performed, a backup is recommended as the first step .


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17. A diagnostic program is a computer program sequence that determines the operational status within the software, hardware, or any combination there of in a system.


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18. Shared memory is memory that may be simultaneously accessed by multiple programs .Shared memory is a method by which program processes can exchange data more quickly than by reading and writing .


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19. When BIOS can not read the partition table information an error is there found to have occurred. The error is known as Invalid drive or drive specification.


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20. Standardization is the process of implementing and developing technical standards based on the consensus of different parties. Standardization can help to maximize compatibility, interoperability, safety, repeatability .


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