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How To Clean Your Notebook

000099_vaio-ar50-series Here are some suggestions to clean your notebook.

Step1:
Now that you’re inside the notebook, use a torch to look around for built-up dust and dirt. Using the eraser-end of a pencil or tweezers, pick off any nasty deposits you come across.

Start at the fan, then work your way to the ducts and vents. Look under the ribbon cables, around the hard drive, and near the tiny circuit boards. Grime can hide in the oddest places, like the processor’s copper-coloured heat sink, so make sure you explore all the notebook’s nooks and crannies.

Step 2:
You’ve done the detail work, and now it’s time to go big. Put on a dust mask, if you have one. Grab the can of compressed air and spray down the inside of your notebook. Just be careful to maintain the spray at least 8 in. from your computer because the spray comes really cold and that can burn the surface. Blow out all the dust you can find. It won’t be pretty, and you might want to have a vacuum cleaner running nearby to grab all the junk it as it comes out. Don’t be surprised if a lot comes out of that little notebook.

Step 3:
Now that you’ve made your first pass at cleaning out the inside, give your notebook a little shake to dislodge any particularly resilient dust and grime. Keep cleaning and shaking until nothing more comes out.

Step 4:
Now that the inside of your notebook is as clean as a whistle, it’s time to tidy up that nasty keyboard. Don’t be embarrassed by what you find: Most keyboards have enough crumbs to feed a flock of pigeons for weeks. Use the can of compressed air to blow it clean, but be careful not to break any keys off.

Step 5:
While you’ve still got the notebook open, give each of the major components a quick look to see if any are loose. A loose motherboard or hard drive can cause damage in the long run, so make sure all of the screws are tight and all of the cables are well connected. When tightening the screws, be careful not to overdo it — gently tighten until you feel some resistance. When you’re done, reconnect the access panels on the underside of your notebook.

Step 6:
All notebook screens are susceptible to nicks and scratches, and the latest glossy, high-contrast displays show off fingerprints. We like to give our screens a quick rubdown about once a week. You can use any brand of window cleaner so long as it doesn’t contain ammonia or any harsh detergents.

 

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How to Convert Decimal to Binary and Back

binary Converting a number to binary:

Base 2 and base 10 are fancy ways of saying Binary and decimal, let’s say we wanted to convert a number to binary, the number 45.

Here’s what we would do.

45/2 = 22.5, since 22.5 is not a whole number, we add a 1 to our binary figure, (In the end of it.)

So it would be xxxxx1.

We round 22 down, and divide again.

22/2 = 11. Yay! It’s a whole number, that means we add a zero to our binary figure.

xxxx01

11/2 = 5.5 Uh-oh, not a whole number, that means another 1, now we round down.

xxxx101

5/2 = 2.5 Which is another 1

xxx1101

2/2 = 1, xx01101

1/1 = 1. 101101 is our final number

Try converting some of these numbers to binary

22,
28,
19,
54,
98,
42,
121

Converting Binary back to Decimal is a similar process, with a clear-cut formula. :D
Lets take this binary number: 101101 (Which just happens to be the result from our previous conversion) . Take the last number, since it is a 1, we use the following formula.

1*(2^0) = 1

The next number is a 0, therefore, we put a zero down. Notice that the third number increases each time.

0*(2^1) = 0

Next number, again, is a 1, notice how we put the numbers of the binary phrase (forward into the formula)
1*(2^2) = 4

Another 1
1*(2^3) = 8

A zero
0*(2^4) = 0

And a final one
1*(2^5) = 32

Now we add all the numbers we got up.
32 + 0 + 8 + 4 + 0 + 1
32 + 8 + 4 + 1
40 + 5
45

If your way way too lazy to convert numbers manually, you could always use a converter.

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Backup Your iPhone Or iPod Touch

http://emovilpro.com/blog/wp-content/uploads/2008/04/iphone.jpgIf you want to upgrade your firmware you must create a backup of your iPhone or iPod before you do something else. So here are the steps you have to follow according to Apple.

Creating a Backup

Backups can be created in the following ways:

  • If you have configured your iPhone or iPod touch to automatically sync with iTunes on a specific computer, iTunes will back up the iPhone or iPod touch after you connect it to that computer and sync with iTunes. iTunes will not automatically back up an iPhone or iPod touch that is not configured to sync with that computer. iTunes only makes one backup each time you connect, even if you sync multiple times before disconnecting.
  • If you choose to update the software, iTunes will back up the iPhone and iPod touch automatically.
  • If you choose to restore the software to factory settings, iTunes will ask you if you want to back up the iPhone and iPod touch. The backup created when you restore a device is separate from the one create when the device is synced. The backup created prior to a restore is marked in the syncing preferences of iTunes with the date and time when the backup was created.

Restoring from a Backup

To restore information from a backup:

  1. Connect the iPhone to the computer you normally sync with.
  2. In iTunes, select the Summary tab and click Restore (this erases all data on iPhone). When prompted, select the option to restore your settings.
    Notes:
    • Information you can sync from the computer (e.g., photos, videos, songs) that are not stored in the back up will need to be resynced. Photos you take with iPhone are included in the backup with iPhone software 1.1 and later.
    • Your passwords will need to be entered again if your restore your backup to a different device.
    • If you restored to a different iPhone, you will need to reactivate Visual Voicemail.

Deleting a Backup

If you want to delete a backup created by iTunes, follow these steps in iTunes 7.5 or later:

  1. Open iTunes Preferences:
    Windows: Choose Edit > Preferences.
    Mac: Choose iTunes > Preferences.
  2. Click Syncing (iPhone or iPod touch does not need to be connected).
  3. Select the backup you want to remove and click Remove Backup.
  4. Confirm you wish to remove the selected backup by clicking Remove Backup.
  5. Click OK to close the iTunes Preferences Window.


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