Printer Care and cleaning

The printer is very sensitive to damage if we can not take care of and cleaned properly and regularly. Here are some tips you can do to treat and clean the printer to be more durable.

A. Each cleaning the printer, make sure the printer is really in a state of death and no cables connected to either the electrical or computer.
B. Use non-flammable solution to clean on the printer.
C. To clean the head manually, you should use a clean soft cloth and do the scrub on the head slowly.
D. At a certain time, use the command "head cleaning" software contained on the properties of each printer to clean the printer head from the ink spread or spilled.
E. Use quality carbon ribbon, ink, or toner is good because it will affect the quality and age of the printer.
F. Do not ever make changes or modifications that do not conform to the printer as some parts of the printer contain high-voltage components.
G. Never put objects, such as iron, condensation, or food on the printer because if it falls into the printer, it will cause damage to some important components.

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Troubleshooting on VGA

Ilustration: PCI Express

The following will discuss the indications of damage on the VGA and solutions.

A. There are not pictures on the screen because the screen connector is not installed on the VGA card or connectors are not installed properly.
Solution

• Make sure the connector is mounted display properly in the appropriate slot on the VGA card that is located behind the casing.

B. At the time the computer is turned on, a beep sounds good or sounds bid two times, but has not issued any image display on the screen. This is due to the installation or the VGA card does not fit properly in the PCI or AGP slot located on the motherboard or the VGA card that is used is broken.
Solution:

• Check your VGA card and attach it properly and fit in the slot corresponding with a VGA card that is used on the motherboard.
• Replace with a new VGA card.

C. Computer with a normal life, but there are letters on the screen flickering or lines appear due to the VGA card that is damaged.
Solution:

• Replace damaged VGA card with the new. Adjust with the use of computers.

Hopefully this article can be helpful and useful.

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Borrows Google Packet Speeding Tech of New Linux kernel

Harnessing a pair of protocols developed by Google, the newly released version of Linux kernel should be able to speed network traffic throughput considerably.

The technique is one of a number of new features that come with the latest update of the open source operating system kernel, Linux version 2.6.35, which Linus Torvalds released on Sunday.

In addition the usual round of bug fixes and optimizations, the new version has a number of new features to make it more usable in today's bustling multicore, networked environments.

Chief among these new features is the inclusion of Google's Receive Packet Steering (RPS) and Receive Flow Steering (RFS). RPS spreads incoming packets out across all of the CPUs available on the machine, and RFS calculates which cores would be best suited for processing, given factors such as which applications will be using the network traffic, according to an explanation offered by the Kernel Newbies Web site.

The site cited a benchmark test showing how an eight-core Intel CPU-based server, with an Intel e1000e network adapter, doubled the number of networking-based transactions-per-second (tps) it could execute with RPS and RFS in place, from 104,000 tps (at about 30 percent CPU usage), to 303,000 tps (and 61 percent CPU usage).

The feature is a timely one, given the recent advances in network traffic protocols that allow for greater throughput. Ethernet vendors, for instance, are in the process of upgrading to the new standards for 40 Gigabit and 100 Gigabit Ethernet. "Network cards have improved the bandwidth to the point where it's hard for a single modern CPU to keep up," explained Kernel Newbies.

Other new features include a new form of memory compression, a front-end for a debugger supplied by SGI, the ability to manage multiple multicast route tables, and a new mode of the XFS file system that bundles logging tasks in order to cut down input/output traffic.

This new version of the Linux kernel comes less than the months after the release of the previous iteration, 2.6.34.

Via: [networkworld]

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RAM Memory Care

After the previous post, I discussed about the problems that occurred in RAM, so on this occasion I will give you tips on how to care for the RAM to make it more durable.
Here are some points that can be noticed in the treatment of computer RAM.

1. Avoid over clocking action if the computer does not support for the over clock.
2. Keep the temperature stable computer with install more fans inside the casing and a good computer.
3. Use a memory from vendors who have proven good quality.
4. Use a memory with the capacity and relevant PC applications that will be used to work so that the computer does not happen often hangs.

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Hard Drive Temperature on Your Monitor

Ilustration

The hard drive is one of the hardest working computer components in your case, yet you rarely see it or need to interact with it until there is a problem. Your computer begins to run slow and lags. While this could indicate a hot CPU, you could also be experiencing the symptoms of an overheating hard drive. Hard drives are made up of moving parts that spin quickly and generate heat. The resulting heat will not only cause the hard drive to slow down, but the heat it generates can cause the CPU and video card to overheat.

So how do you check your hard drive’s temperature? There are many programs you can run to monitor the temperature of your hard drive, but HDD Health is a lightweight applications that quietly runs in the background and accesses the S.M.A.R.T (Self-Monitoring-and-Reporting-Technology) built into modern hard drives.  Aside from the hard drive temperature, HDD Health will also display some important information about our hard drive, such as model and firmware version.

Hard drive health

So how do you cool down a hot hard drive? You should clean the intake fans that draw air in through the front. If your case does not have an intake fan, just make sure the grill area at the front of the case is free on debris. You case might also have a fan that pulls hot air out of the case through the back. If it does not, the power supply will. Make sure the grills on the inside of the power supply and the back of the case are clear.

Make sure you do not stack hard drives on top of each other. If you have more than one hard drive, try to space them a couple inches apart.

Another thing you can do to cool off the hard drive is defrag it. The less a hard drive has to work, the cooler it will run. Lastly, make sure the cables are arranged inside the case in such a way that air can flow through the front and out the rear with little resistance.

The cooler your hard drive runs, the cooler the ambient temperature inside the case will be. This will improve the general health and reliability of your PC for years to come.

Download HDD Health

Via: [pctechbytes]

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Troubleshooting on RAM

Below are points to be discussed indications of damage on the RAM and find it.

1. Computer sound "beep" over and over again without long-displaying pictures on screen when the computer starts up. The solution is:

• Make sure the RAM are mounted on DIMM slot with a perfect & locked.
• Make sure that the installation of two RAM chips with the same PC and preferably by the same vendor brand.
• If the RAM is damaged, replace it with a new RAM and better with RAM that has a capacity greater than the damage.

2. Installation of two keeping the RAM that does not fit on a computer often leads to problems, among others:

• Computers will often hang and blue screen appears when we work in an application program or playing games.
• Computers also often can not survive or when booting up.
• The solution to this problem is to replace one RAM chip with a PC and the same vendor brand RAM is only so that both the PC and the brand has the same vendor despite the different capacities second RAM (for the RAM type of single channel).

3. RAM if installed capacity is not sufficient premises, computer performance will be slower in reading data or run applications programs. This can be overcome by increasing the existing capacity of RAM, but it must be with the same RAM and PC will be better if with the same vendor brand.

4. ROM type memory damage will result in blank computer or can not live at all. This can be overcome by replacing the ROM or BIOS upgrade with the same type.

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System recovery and data hardware and software

People commonly come by looking for advice recovering their data. Both from a dead computer and one with nasty virus infections. Each requires a different approach but can usually be done relatively cheap.

If the computer does not power up the easiest solution is removing the hard drive and connecting it to a working PC. There are basically two ways to connect the drive to another computer, either through a simple cable system or an external enclosure. For ease of use a simple IDE/SATA to USB cable with a power supply is hard to beat, especially if you might be using it pretty often on different drives. Some people prefer an enclosure to ensure no accidental static can harm the exposed drive.

From experience I've learned that some enclosures can be just as deadly to a drive because they can slide. Like off the top of the working computer to the desktop or floor. In the best case you can lose a drive or break the enclosure. Worst case is losing them both. I've found handling the bare drive makes me more likely to handle with care. Any smooth, non-conductive, surface is safe to set the drive on but some people suggest setting them upside down.

Both Newegg (Enclosures, Cables) and Amazon (Enclosures, Cables) have a selection of both. Just be sure you get one that accepts both the size, (3 1/2" for most destops, 2 1/2" for laptops) and type (IDE has large flat data cables, SATA has thin red cables).

For a computer that is powering up but will not boot there are several possible problems. If you know the problem is a virus you can download a bootable Rescue CD. The one most commonly
suggested by our forum members is the BitDefender Rescue CD. This tool is great because you never need the hard drive, it runs solely from the CD/DVD and RAM. The file is downloaded and burned AS AN ISO to a CD or DVD. Usually computers will be configured to boot from this drive before the hard drive so it works with no problems. Because it can be used to transfer files to a USB drive it's great for problems like a corrupted OS. Because most recovery disks format the hard drive this can be used to remove files before you reinstall the OS.

And finally there is the Recovery Disks. Most common computers use these to restore the computer and drivers to the original state that you purchased it. You only want to use these if you have your important documents saved to another disk or drive, otherwise it will be lost. For those who have lost their factory provided disks they can be purchased. One of the forums sponsors, Secure Remote Support, carries a complete line of disks for almost any brand and OS. Their website, Recovery-Disks.com, has all their contact information including a phone number for contacting their sales and support team.

via: [pctechbytes]

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A System Is Dangerously Low On Resources Message

If you receive a system is dangerously low on resources message, this could mean you have a memory leak. A memory leak is less of a problem these days, but can occur if a program is quit or crashes before it completely finished loading. A program is supposed to relinquish the resources it takes when it shuts down. When this does not happen, a memory leak will siphon your system resources until your computer feels sluggish and you begin to get errors.
Regain System Resources

You can easily regain these system resources by rebooting the computer. But you need to figure our what application is causing the memory leaks–especially is this is a reoccurring problem. You can check the task manager to see what programs are running by hitting CTRL+ALT+DEL and selecting Task Manager, then the Processes tab. In the far right column you will see which programs are consuming the most RAM. If you see an application in there that is not running, but still consuming resources, you should end the task or reboot the machine. Check the task manager again when you reboot
. If if the program reappears and you are not running it, go to Start and in the run or search box type msconfig and hit OK. On the startup tab, uncheck that program if it is listed. The next time you reboot, that program should not load.

You can also uninstall any old programs you no longer use through the control panel. Uninstalling old programs ensures they stay out of memory and as a result, your computer should remain stable and run faster.

Keep in mind that memory leaks can be caused by programs that have coding issue and bugs. If you find that a particular program you like is causing a memory leak, check for a patch or a newer version of that program, as the issue might have been corrected in the latest release.

Via: [pctechbytes]

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Troubleshooting on Processor and its Maintenance

Problems on the processor generally cause the appearance of the layer blank without any sound. This occurs because:
1. Processors dead or damaged.
2. The processor temperature is too hot burns caused due to over clock or because the processor fan is not working.
The solution is to replace a new processor.

Processor Maintenance
The treatment for computer processors are:
1. Use a good heat sink and fan.
2. Frequently clean the heat sink and fan attached to the processor.
3. Trim the cable is in the casing.
4. Avoid doing the technique is not easy to over clock the processor to heat and age, the processor can be longer.

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Troubleshooting on Motherboard

Often there are problems on the motherboard that caused by faulty hardware components installed on the motherboard or damage to the chipset used on the motherboard and I / O.
The problems that can occur such as:

A. Computers can not be switched on or often referred to by the term "motherboard blank" when the ON button on the casing has been pressed without any sound. Usually this happens because:
Defective power supply or power supply cables to the motherboard is placed incorrectly or loosely.
1. BIOS is corrupted or not functioning.
2. CPU clock setting error due to over clock on a computer.
3. Processor that is installed is damaged or incompatible with the motherboard socket that is used.
4. Fan on the processor die.
5. Damage to the existing chipsets on the motherboard.
Solutions
1. Make sure the power supply lights up and the connectors installed properly on the existing connector on the motherboard.
2. Reinstall the BIOS program that existed at the CMOS / BIOS on the motherboard.
3. Restore all default settings in the BIOS.
4. Use in accordance with the type of processor that the existing motherboard.
5. If it does not rotate, the fan on the processor should be replaced with new ones.
6. Chipset damaged must be replaced with a brand of the same chipset.
7. Clear CMOS / BIOS function from the initial reset all BIOS settings, by removing the "reset jumper" on the motherboard, then installed again.

B. Computers often hang or can not boot.
This is caused by:
1. Chase memory on the motherboard is damaged.
2. BIOS settings are not correct due to over clocking
3. Motherboard dirty or full of dust, so the data points on the motherboard much disturbed.
Solutions
1. Replace IC chase memory with the same type and brand. Because this work requires a professional, you can fix this by disabling the function of memory chase through the motherboard BIOS settings. However, in order not computer performance is slower, main memory capacity are required to be added (eg an existing memory of 256MB, 256MB should be added again to 512MB).
2. Restore the BIOS settings at default or in any way clear the CMOS / BIOS.
3. Clean the motherboard and the fan is in the casing with a soft brush.

C. At the time the computer boots, there is a message "CMOS failure" and "Press F1 to continue". The problem is caused by BIOS CMOS battery has been depleted or damaged. The solution is to replace the CMOS battery on the motherboard BIOS with the new.

D. Damage was also often occurs due to the connector I / O motherboards.
This damage, such as:
1. LPT port (port printer) damaged so that the printer can not work.
2. Serial port (Com 1 or Com 2) damaged so that all equipment that uses this port can not function. Like a mouse model of external devices that use this port.
3. The USB port is damaged. Often there is a presumption that the external device that uses this port is damaged, for example, USB flash, USB mouse & keyboard, digital camera not detected by the computer.
Solutions
To overcome the problem of I / O port, replace the appliances or connector I / O with the new. You can do it yourself by installing a super I / O card as an equipment replacement I / O ports by installing a defective motherboard I / O card on PCI slot. In order for the super I / O cards can work on your computer, you must disable the internal function of I / O is in the motherboard by setting enabled in the BIOS to disable. The motherboard uses the I / O card installed in PCI.

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MRAM: Newest Technology Computer Memory, 10 times faster than RAM

If you always desired for a fast computer, an ordinary RAM may just not be a solution. German physicists and engineers have thus developed the Magnetoresistive Random Access Memory (MRAM), which is not only faster but also more energy efficient. MRAM seems like it will boost the mobile computing industry and stores the level of charge by changing the north-south direction of a magnet’s field. IBM and other manufacturers are planning to use MRAM, which could spin electrons to flip the magnetic fields, which is also known as the spin-torque MRAM, something that the German physicists have further improvised and built the fastest so far.

By building tiny pillars of 165 nanometres, which act, as variable magnets at the top end, allow current to pass through from bottom to top and the spin of the electrons take place. The fields are flipped and it takes a while for it to settle to it’s new orientation. Then, the north and south axis draw circles in the air before finally settling which causes a wobble. Since this depends on the magnetic field and the wobble that takes place in a field, the German team developed a way to observe and control a magnetic field’s wobble during and after the flip. Right now, the MRAM is about 10 times faster than a MRAM, which needs 10 nanoseconds, and the conventional RAM needs 30 nanoseconds. This speed will definitely increase in the months and years to come.

[gizmowatch]

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Monitor critical terms

a. Screen size: Screen size is the length of the diagonal of the screen, measured in inches. At this time, the monitor 17 "(inches) become standard options than the size of the monitor 14" or 15 "which are widely used in the 90s era. However, do not close the possibility to choose size over 17 ".
b. Resolution: the resolution is the number of pixels contained in the image. The greater the resolution, the image will be shown more detail. For example, a monitor with a resolution of 1280 x 1204 pixels means that there are 1204 lines created from top to bottom and each line consists of 1280 separate pixels.
c. Refresh rate: This is the number of times an electron gun firing electrons at the screen. Refresh rate is measured in Hertz (Hz). Instead, the monitor has a refresh rate of 72 Hz or higher. Low refresh rate can cause fatigue in the eye.
d. Dot pitch: This is the density of picture elements called pixels or dot pitch. The more pixels the meeting, the more smooth and sharp display generated by the monitor. Instead, select a monitor that has a dot pitch values less than 0.28 mm.
e. Pixel response rate: This is the amount of time it takes a pixel to be active or not. In general, the pixel response rate is measured in units of ms (milliseconds). The smaller the average time, the better the image quality LCD display.
f. Dead pixels: This is the pixel located somewhere on the screen does not change the color images displayed when a different color. Dead pixel is one problem that often occurs on the LCD monitor. The characteristics of LCD have dead pixels is by paying attention to every part of the screen with color display plain white and black colors. Make sure that no color or a color shown left is not appropriate.
g. Luminance: This is a term that indicates the brightness of the LCD monitor owned. Luminance is measured in units’ candel or can be called nits. The bigger nits owned LCD monitor, the more good and bad of a picture seen. Range owned nits LCD monitor typically is 170 nits and the upper-class LCD monitors ranging up to 300 nits.
h. Contrast ratio: This is the difference between light and dark areas on the screen. Usually ranging from 200:1 to 500:1. in general, the higher the contrast ratio which is owned by the LCD monitor, the better the quality of images displayed. Large contrast ratio is recommended around 300 to 500.
i. Viewing angle: this is on the LCD monitor is divided into two: the horizontal viewing angles and vertical viewing angles. The greater the angle of the LCD monitor is owned, people will more clearly see the text or images on the LCD screen when used for presentations. Today, manufacturers are always improving the quality of the LCD monitor viewing angles to produce LCD monitor.

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Robot to picks up the stuff too big for your

WowWee’s Roboscooper is the new guy to help you with picking up stuff. Running on six AAA batteries, the scooper will pick up the stuff for you. However, the bad part is that it only picks up small objects and its storage capacity is very limited. And, in case you are in mood of having some fun, then you can use the remote control, putting it on the whack mode, which will let him swat the objects rather than just picking them up. It is available for $70.
Via: Gizmo

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The working principle and advantages LCD monitor

LCD commonly found in digital watches and laptop screen. LCD monitor is the type that uses two sheets of polarizing material with liquid crystal located in the middle. When electric current flows through the liquid and crystal, the crystal was joined so that the light does not enter. Therefore, the crystal works like a valve that allows light in or blocked.

1. Working principle
a. Placing liquid crystals between two surfaces that are smooth grooves. Smooth grooves on the surface make an angle of 90o a (perpendicular) with smooth grooves on another surface. If the molecules are arranged on one surface from north to south and one molecule on the other surface leads from west to east, there are molecules of which will be forced to rotate 90o. As a result, the path of light that followed the structure of this molecule also rotates 90 ° when passing through the liquid crystal. When electricity stress supplied to the liquid crystal, molecules will arrange themselves vertically lets light to pass through without turning 90o.
b. Rely on the polarization properties (is a collection of very fine parallel lines). Through this polarizing filter, the light from background sources is filtered and then rotated by the liquid crystals and is filtered again before exiting.

2. Excess
a. LCD monitor has a sleek shape, flat, lightweight and thin so it does not require a large place to put it down compared to CRT monitors. The bigger the screen size, the greater weight and its shape.
b. Same diagonal size LCD displays with the region so that no area is lost. On the LCD panel, no problems focusing the light beam (convergence) is often the case on the type of CRT monitor because each cell on own switch. This is one reason that makes it look sharper LCD monitor for displaying text and images.
c. On the LCD screen, does not occur, or flickering flicker because the LCD monitor has a constant light source across the screen. One by one pixel on, and will continue to run until it is turned off, unlike a CRT monitor that needs to be refreshed many times.
d. Components on the LCD monitor that can be experienced aging (wear) is the backlight only. CTR on the monitor, which can experience aging, is contained in the oxide layer and the electron gun can cause a decrease in light flow. Phosphorus in the surface of the screen can also be worn out and become less efficient.
e. LCD monitors consume much less power than CRT monitors.

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