Maintain Good Eye Health

1. Eat for Good Vision
Protecting your eyes starts with the food on your plate. Nutrients such as omega-3 fatty acids, lutein, zinc, and vitamins C and E might help ward off age-related vision problems such as macular degeneration and cataracts, studies show. Regularly eating these foods can help lead to good eye health:

Green, leafy vegetables such as spinach, kale, and collards
Salmon, tuna, and other oily fish
Eggs, nuts, beans, and other non-meat protein sources
Oranges and other citrus fruits or juices

Eating a well-balanced diet also helps you maintain a healthy weight, which makes you less likely to get obesity-related diseases such as type 2 diabetes. Diabetes is the leading cause of blindness in adults.

2. Quit Smoking
Smoking makes you more likely to get cataracts, optic nerve damage, and macular degeneration. If you've tried to quit smoking before and started smoking again, keep trying. The more times you try to quit smoking, the more likely you are to succeed.

3. Wear Sunglasses
The right kind of sunglasses will help protect your eyes from the sun's ultraviolet (UV) rays.

Too much UV exposure makes you more likely to get cataracts and macular degeneration.

Choose sunglasses that block 99% to 100% of both UVA and UVB rays. Wraparound lenses help protect your eyes from the side. Polarized lenses reduce glare when driving.

If you wear contact lenses, some offer UV protection. It's still a good idea to wear sunglasses for more protection, though.

4. Use Safety Eyewear
If you work with hazardous or airborne materials on the job or at home, wear safety glasses or protective goggles every time.

Certain sports such as ice hockey, racquetball, and lacrosse can also lead to eye injury. Wear eye protection (such as helmets with protective face masks or sports goggles with polycarbonate lenses) to shield your eyes.

5. Look Away From the Computer Screen
Staring at a computer screen for too long can cause:

Eyestrain
Blurry vision
Trouble focusing at a distance
Dry eyes
Headaches
Neck, back, and shoulder pain
Taking the following steps to protect your eyes:

Make sure your glasses or contact lens prescription is up-to-date and adequate for computer use.
Some people may need glasses to help with contrast, glare, and eye strain when using a computer.
Position your computer so that your eyes are level with the top of the monitor. This allows you to look slightly down at the screen.
Try to avoid glare on your computer from windows and lights. Use an anti-glare screen if needed.
Choose a comfortable, supportive chair. Position it so that your feet are flat on the floor.
If your eyes are dry, blink more.
Every 20 minutes, rest your eyes by looking 20 feet away for 20 seconds. At least every 2 hours, get up and take a 15-minute break.

6. Visit Your Eye Doctor Regularly

Everyone, even young children, should get their eyes examined regularly. It helps you protect your sight and see your best.

Eye exams can also find some eye diseases, such as glaucoma, that have no symptoms. It's important to find these diseases early on, when they're easier to treat.

Depending on your eye health needs, you can see either an optometrist or an ophthalmologist for an eye exam. Ophthalmologists are medical doctors who specialize in eye care. They can provide general eye care, treat eye diseases, and perform eye surgery. Optometrists have had 4 years of specialized training after college. They provide general eye care and treat the most common eye diseases. They don't do eye surgery.

A comprehensive eye exam might include:


Talking about your personal and family medical history
Taking vision tests to see if you have nearsightedness, farsightedness, astigmatism (a curved cornea that blurs vision), or presbyopia (age-related vision changes)
Tests to see how well your eyes work together
Eye pressure and optic nerve tests to check if you have glaucoma
External and microscopic examination of your eyes before and after dilation
You might also need other tests.

Thirty Simple Diet and Fitness Tips

 Pick your perfect tunes
 Running with music is a great way to get in a groove (just make sure it's not blasting too loudly, or you won't hear those cars!). To pick the ultimate iPod playlist, think about what gets you going. "I know several elite athletes that listen to what we'd consider 'relaxing' music, such as symphony music, while they do a hard workout," says Andrew Kastor. So don't feel like you have to download Lady Gaga because her tunes are supposed to pump you up—go with any music that you find uplifting.

Curb your sweet tooth
Got a late-night sugar craving that just won't quit? "To satisfy your sweet tooth without pushing yourself over the calorie edge, even in the late night hours, think 'fruit first,'" says Jackie Newgent, RD, author of The Big Green Cookbook. So resist that chocolate cake siren, and instead enjoy a sliced apple with a tablespoon of nut butter (like peanut or almond) or fresh fig halves spread with ricotta. Then sleep sweet, knowing you're still on the right, healthy track.

Find the best fitness friend
 A workout buddy is hugely helpful for keeping motivated, but it's important to find someone who will inspire—not discourage. So make a list of all your exercise-loving friends, then see who fits this criteria, says Andrew Kastor, an ASICS running coach: Can your pal meet to exercise on a regular basis? Is she supportive (not disparaging) of your goals? And last, will your bud be able to keep up with you or even push your limits in key workouts? If you've got someone that fits all three, make that phone call.

Stock up on these
 While there are heaps of good-for-you foods out there, some key ingredients make it a lot easier to meet your weight-loss goals. Next grocery store run, be sure to place Newgent's top three diet-friendly items in your cart: balsamic vinegar (it adds a pop of low-cal flavor to veggies and salads), in-shell nuts (their protein and fiber keep you satiated), and fat-free plain yogurt (a creamy, comforting source of protein). "Plus, Greek yogurt also works wonders as a natural low-calorie base for dressings and dips—or as a tangier alternative to sour cream," says Newgent. Talk about a multitasker!

Relieve those achy muscles
After a grueling workout, there's a good chance you're going to be feeling it (we're talking sore thighs, tight calves). Relieve post-fitness aches by submerging your lower body in a cold bath (50 to 55 degrees Fahrenheit; you may have to throw some ice cubes in to get it cold enough) for 10 to 15 minutes. "Many top athletes use this trick to help reduce soreness after training sessions," says Andrew Kastor. And advice we love: "An athlete training for an important race should consider getting one to two massages per month to help aid in training recovery," adds Kastor. Now that's speaking our language!

Buy comfy sneaks

You shouldn't buy kicks that hurt, bottom line! "Your shoes should feel comfortable from the first step," says Andrew Kastor. So shop in the evening—your feet swell during the day and stop in the late afternoon, so you want to shop when they're at their biggest. Also make sure the sneaks are a little roomy—enough so that you can wiggle your toes, but no more than that. They should be comfy from the get-go, but Kastor says they'll be even more so once you have a good 20 to 40 miles on 'em.

How 2 unlock your iPhone for use with another carrier

You can unlock your iPhone for use with different carriers. Unlocking means that you can use your phone with a different carrier. An unlocked phone is sometimes called a SIM-Free or contract-free phone.

Unlock your iPhone
First, your carrier will need to process your unlock request. Then you'll back up, erase, and restore your iPhone to unlock it.
Start the process:
See if your carrier offers unlocking. Only your carrier can unlock your iPhone.
Contact your carrier and request an unlock. You might need to meet requirements to qualify for unlocking. After you submit the request to your carrier, it might take a few days to complete. Contact your carrier for the status of your unlock request.
After your carrier confirms that your iPhone unlock has been processed, go to the next section.
If you have a SIM card from a carrier other than your current carrier, follow these steps:
Remove your SIM card and insert the new SIM card.
Complete the setup process.
If you don't have another SIM card you can use, follow these steps to complete the process:
Back up your iPhone.
When you have a backup, erase your iPhone.
Restore your iPhone from the backup you just made.

Get help

Follow these steps if you have any issues or if you see this message in iTunes or on your device:
"The SIM card inserted in this iPhone does not appear to be supported. Only compatible SIM cards from a supported carrier may be used to activate iPhone. Please insert the SIM card that came with your iPhone or visit a supported carrier store."
Restore your iPhone to factory settings.
Contact your carrier to make sure that the unlock was applied in your carrier's system.
Restore your iPhone from a backup.

Incorrect Video Resolution Setting

 Once the driver has been installed, some utility program will probably also be installed that you notify the resolution (640*480 to 1280*1024), the number of colors (64 to millions of colors), and the refresh the monitor (the frequency at which the monitor operates; usually 60, 72 or 75 HZ) Run the utility program and then select the resolution, numbers of colors and refresh rate you desire for your system. 220 
HINT: unless you have a "multi-sync" monitor, select 60 Hz as your standard refresh rate; check the documentation on your monitor to determine your monitor type. SVGA Monitors will operate at 60, 72, 75 and 83 Hz refresh rates; older models may only do 60 or 72 HZ. Normally, this is all you need to do to improve the video performance on your monitor. You should  also know the number of colors displayed by your monitor is not function of the monitor but the video card itself. The amount of installed video RAM along with the software drivers will determine how many colors can be displayed. Old VGA monitors can display 32 million color but can't display them at higher levels resolution. These higher resolution levels usually demand a faster refresh rate on the monitor, which is why Super VGA monitors are superior to older VGA monitors.

Architectural Advances

In Recent years Intel has managed to follow this low and ahead of competition by releasing  more powerful chips for the PC than any other company. In 1978 the 8086 ran at 4:77 MHZ and had under a million transistor. By the end of 1995 their Pentium pro had a 21-million on-chip transistors and ran at 200 MHZ.
In Recent years Intel has managed to follow this low and ahead of competition by releasing  more powerful chips for the PC than any other company. In 1978 the 8086 ran at 4:77 MHZ and had under a million transistor. By the end of 1995 their Pentium pro had a 21-million on-chip transistors and ran at 200 MHZ.
In Recent years Intel has managed to follow this low and ahead of competition by releasing  more powerful chips for the PC than any other company. In 1978 the 8086 ran at 4:77 MHZ and had under a million transistor. By the end of 1995 their Pentium pro had a 21-million on-chip transistors and ran at 200 MHZ.
In Recent years Intel has managed to follow this low and ahead of competition by releasing  more powerful chips for the PC than any other company. In 1978 the 8086 ran at 4:77 MHZ and had under a million transistor. By the end of 1995 their Pentium pro had a 21-million on-chip transistors and ran at 200 MHZ.
In Recent years Intel has managed to follow this low and ahead of competition by releasing  more powerful chips for the PC than any other company. In 1978 the 8086 ran at 4:77 MHZ and had under a million transistor. By the end of 1995 their Pentium pro had a 21-million on-chip transistors and ran at 200 MHZ.
In Recent years Intel has managed to follow this low and ahead of competition by releasing  more powerful chips for the PC than any other company. In 1978 the 8086 ran at 4:77 MHZ and had under a million transistor. By the end of 1995 their Pentium pro had a 21-million on-chip transistors and ran at 200 MHZ.
In Recent years Intel has managed to follow this low and ahead of competition by releasing  more powerful chips for the PC than any other company. In 1978 the 8086 ran at 4:77 MHZ and had under a million transistor. By the end of 1995 their Pentium pro had a 21-million on-chip transistors and ran at 200 MHZ. 11

Memory Speed, Access And Timing

This section describes the details on how the system memory works. This includes the particulars of how memory is accessed and important issues related to system timing. The speed of the system memory is also very important because it is a contributing factor to overall performance.There are many different aspects that influence the real-world speed of memory.

The  Memory Controller 

 Every computer has within it a hardware logic circuit called the memory controller. This is the part of the system that, well, controls the memory. It generates the necessary signals to control the reading and writing of information from and to the memory, and interfaces the memory with the other major parts of the system. The memory controller is normally integrated into the system chip set.

Memory Access and Access Time

When memory is read or written, this is called a memory access. A specific procedure is is used to control each access to memory, which consists of having the memory controller generate the correct signals to specify which memory location needs to be accessed and then having the data show up on the data bus to be read by the processor or whatever other device requested it.  79

Copper interconnect

Every chip has a base layer of transistors, with layers of transistors, with layers of wiring stacked above to connect the transistors to each other and, to the rest of the computer. The transistors at the first level of chip are a complex construction of silicon, metal, and impurities precisely located to create the millions of minuscule on-or-off switches that make up the brains of a microprocessor. Breakthroughs in chip technology have most often been advances in transistor-making. As scientists kept making smaller, faster transistors and packing them closer together, the interconnect started to present problems.

Aluminum has long been the conductor of choice, but it reached the technological and physical limits of existing technology. Pushing electrons through smaller and smaller conduits becomes harder to do aluminum just isn't fast enough at these new, smaller sizes. Scientists had seen this problem coming for years and sought to find a way to replace aluminum with one of the three metals that conduct electricity better: copper silver or gold. However, afer many years of trying on one had succeeded in making a marketable copper chip.

All this changed in September 1998, when IBM used its revolutionary new copper interconnect technology to product a chip which used copper wires, rather than the traditional aluminum interconnects, to link transistors. This seemingly minor change is likely to have significant repercussions for future processor designs. Copper interconnects promise the ability to shrink die sizes and reduce power consumption, while allowing faster CPU speeds from the basic design. 38