A monochrome monitor is a monitor with black and white only display. It is a Cathod Ray Tube (CRT) type of monitor. Its radiation is two times lower than that of a CRT colour monitor. Only after 1990s, colour monitors became common with the advancement of electronic engineering technologies and emergence of multimedia concept in the world of personal computer (PC). Since then, monochrome monitor never sold with a PC again but it was replaced by colour monitor instead. Many monochrome monitors were scribed away charging into garbage together with their CPU which were only of XT, AT, 286 and even 386 modals which literally could not run multimedia in realtime mode. Even though early version of Operating System like WINDOWS supported monochrome monitor but many application programmes already ceased to support monochrome monitor. This kind of application limitations and temptations of colourful multimedia eventually forced PC users to put an end to the monochrome monitors.
But the story of monochrome monitor did not end there as many workplaces including banks, super markets and offices particulary those with own computer network system still used monochrome monitor as these workplaces did not run multimedia but mostly merely client-based services. Not only they saved money by retaining the axisting monochrome system without needing to spend money to change the system and the monochrome monitors themselves were cheaper than the colour monitors, the owners and workers of these workplaces were happy with the monochrome monitors as those monitors had less radiation as compared to colour monitors. In term of operating cost, monochrome monitors consume less electricity than colour monitors.
In the late 90s, Liquid Crystal Display (LCD) technology that was initially used in notebook computer was used in desktop monitor. This LCD monitor emits relatively no radiation and therefore is very health friendly. Its consumes even less electricity than any CRT monitor. Despites all the good features of the LCD monitor, its price was relatively high until recent years it goes cheaper and cheaper until now. Nowaday, an LCD Monitor merely costs arround $100 dollar each depending on its screen size, people at any workplace can replace their monochrome or colour CRT monitors with the same low cost if not lower cost to enjoy all the good features that CRT monitors do not have particulary the near zero radiation feature provides save environment for workers and clients . It is believed that it is hard to find monochrome monitor supply nowadays and the prize could be very high if there is. Hence, there really is no place for monochrome monitor nowadays.
Wednesday, March 31, 2010
Thursday, February 25, 2010
Know To Take Care Of Your Hard Disk
As I mentioned in the previous post, the most common hardware problem in your computer is hard disk failure. Hard disk failure will result in data lost as well as consumes your time and money. Hence, there are few precautions below that are wise to follow to optimize your hard disk’s health and life.
1. Prevent Sudden Power Blackout. Sudden power blackout will cause a serious scratch over the hard disk platter by the hard disk read-write head when it loses its centripetal force and trying to return to its rest position in the centre. The following practices can avoid your computer from experiencing sudden power blackout.
i) Properly shut down your computer every time by logging off . Never shut down computer by cutting off or switching off the power supply.
ii) Use power backup device like Uninterruptible Power Supply(UPS) to prevent power interruption experienced by your computer.
2. Prevent Your Computer(Hard disk) From Mechanical Shock or Impact
i) As we know, although each time the hard disk read-write heads only hover over its platters to read and write data, but each head is only nanometer away from the platter. Hence, shock or impact may result in collision or contact of the head with the platter and damages the platter’s magnetic surface. If the impact occurs when the hard disk is running, a more serious damage may occur as platters expand due to heat reduces the distance between head and platter, as well as longer scratch occurs on spinning platter than still platter.
ii) So handle your hard disk properly. Never port your CPU and hard disk barely. From my personal experience, wrap your hard disk with thick layers of newspaper can prevent shock to certain degree if you want to port your hard disk and you do not have the polyform filled container. Do not throw away the box that comes with your CPU. It contains polyform material that reduces impact to your hard disk. Use it to port your CPU next time.
3. Well Ventilate Your Hard Disk To Prevent Over Heating.
i) As we know, electrical appliances acquire heat from friction and electrical power conversion during operation. Over heating due to the heat that built up during hard disk operation may cause the hard disk to damage.
ii) Take into account of ventilation before you build a computer system or change the CPU casing.
4. Shield Your Hard Disk From Electrostatic Charge Or Discharge. As we know all new hard disk come with the electrostatic shielded plastic bag. Keep the plastic bag and do not throw it away, but use it when you take out your hard disk to store or port.
5. Keep Your Hard Disk Or Computer Away From Magnetic Source. Hard disk uses some kinds of magnetic particles distribution technology to store data. External magnetic field will alter the magnetic particles distribution and make the hard disk lost data or even alter the magnitude of the magnetic particles and causing the hard disk unstable or permanent loses its platters’ magnetism.
Well, finally I sincerely hope that you get some knowledge from this post.
1. Prevent Sudden Power Blackout. Sudden power blackout will cause a serious scratch over the hard disk platter by the hard disk read-write head when it loses its centripetal force and trying to return to its rest position in the centre. The following practices can avoid your computer from experiencing sudden power blackout.
i) Properly shut down your computer every time by logging off . Never shut down computer by cutting off or switching off the power supply.
ii) Use power backup device like Uninterruptible Power Supply(UPS) to prevent power interruption experienced by your computer.
2. Prevent Your Computer(Hard disk) From Mechanical Shock or Impact
i) As we know, although each time the hard disk read-write heads only hover over its platters to read and write data, but each head is only nanometer away from the platter. Hence, shock or impact may result in collision or contact of the head with the platter and damages the platter’s magnetic surface. If the impact occurs when the hard disk is running, a more serious damage may occur as platters expand due to heat reduces the distance between head and platter, as well as longer scratch occurs on spinning platter than still platter.
ii) So handle your hard disk properly. Never port your CPU and hard disk barely. From my personal experience, wrap your hard disk with thick layers of newspaper can prevent shock to certain degree if you want to port your hard disk and you do not have the polyform filled container. Do not throw away the box that comes with your CPU. It contains polyform material that reduces impact to your hard disk. Use it to port your CPU next time.
3. Well Ventilate Your Hard Disk To Prevent Over Heating.
i) As we know, electrical appliances acquire heat from friction and electrical power conversion during operation. Over heating due to the heat that built up during hard disk operation may cause the hard disk to damage.
ii) Take into account of ventilation before you build a computer system or change the CPU casing.
4. Shield Your Hard Disk From Electrostatic Charge Or Discharge. As we know all new hard disk come with the electrostatic shielded plastic bag. Keep the plastic bag and do not throw it away, but use it when you take out your hard disk to store or port.
5. Keep Your Hard Disk Or Computer Away From Magnetic Source. Hard disk uses some kinds of magnetic particles distribution technology to store data. External magnetic field will alter the magnetic particles distribution and make the hard disk lost data or even alter the magnitude of the magnetic particles and causing the hard disk unstable or permanent loses its platters’ magnetism.
Well, finally I sincerely hope that you get some knowledge from this post.
Sunday, January 31, 2010
The Most Common Computer Hardware Problem
What is the most common computer hardware problem? The most common hardware problem in your computer is hard disk failure. What is hard disk failure and what are the things that causing hard disk failure?
When your computer’s hard disk loses its function to be written data to or read data from itself for the centre processing unit (CPU) while you are very sure that it is properly connected and configured to your computer system -it is a hard disk failure. As it fails to read and write, your computer cannot load the operating system (OS) stored in your hard disk, and you literally cannot boot up your computer to use. When you log into your system’s BIOS setup menu, you either do not see the indication of your hard drive which means the volume (hard disk) is not detected present due to hard disk unrecognizable as it ‘lost it function as a hard disk’. In some BIOS, even if there is indication of hard disk present, there would be no detail on the number of heads, cylinders and so fort due to unreadable bad platter surface of your hard disk. For more details and information on how to diagnose your computer problems you may refer to my earlier post on December 2009.
The solution for hard disk failure is just replace your hard disk or send it back to the manufacturer’s outlet to repair as literally not electrician or computer technician can repair your hard disk and even if they know, they might not have the spare parts like hard disk platter which I think can only be mounted in the hard disk but not putting in any kind of shipping container. Yet, the question remains -who is going to responsible for a warranty when a scratch to the platter occurs during handling with the platter with open contact? .
Hard disk failure being the most common hardware problem of our computer because it is a very sensitive, dedicated and fragile component and it exposed to many factors that can lead to its failure. Factors that contribute to hard disk failure including normal ware out related to life span, mechanical components degradation or failure, electrical short-circuit, static electric charge or discharge, mechanical shock or impact and over heating. Well, I do not want to make this post too long and mess up this topic to further elaboration on how each factor contributes to hard disk failure that I have just mention. Instead, I shall choose to make my next or near future post on how to take care of hard disk by revealing more details and taking account into the factors that lead to hard disk failure.
When your computer’s hard disk loses its function to be written data to or read data from itself for the centre processing unit (CPU) while you are very sure that it is properly connected and configured to your computer system -it is a hard disk failure. As it fails to read and write, your computer cannot load the operating system (OS) stored in your hard disk, and you literally cannot boot up your computer to use. When you log into your system’s BIOS setup menu, you either do not see the indication of your hard drive which means the volume (hard disk) is not detected present due to hard disk unrecognizable as it ‘lost it function as a hard disk’. In some BIOS, even if there is indication of hard disk present, there would be no detail on the number of heads, cylinders and so fort due to unreadable bad platter surface of your hard disk. For more details and information on how to diagnose your computer problems you may refer to my earlier post on December 2009.
The solution for hard disk failure is just replace your hard disk or send it back to the manufacturer’s outlet to repair as literally not electrician or computer technician can repair your hard disk and even if they know, they might not have the spare parts like hard disk platter which I think can only be mounted in the hard disk but not putting in any kind of shipping container. Yet, the question remains -who is going to responsible for a warranty when a scratch to the platter occurs during handling with the platter with open contact? .
Hard disk failure being the most common hardware problem of our computer because it is a very sensitive, dedicated and fragile component and it exposed to many factors that can lead to its failure. Factors that contribute to hard disk failure including normal ware out related to life span, mechanical components degradation or failure, electrical short-circuit, static electric charge or discharge, mechanical shock or impact and over heating. Well, I do not want to make this post too long and mess up this topic to further elaboration on how each factor contributes to hard disk failure that I have just mention. Instead, I shall choose to make my next or near future post on how to take care of hard disk by revealing more details and taking account into the factors that lead to hard disk failure.
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