Wednesday, June 15, 2011

SLEEP VS. HIBERNATE

Most laptops users ask this question frequently:
What is better for my laptop , a Sleep or a Hibernate?
Windows
Well, the answer is simple : If you want to leave your laptop for a short time (1 minute --> couple of hours) use "SLEEP". On the other hand, use "HIBERNATE" when you're coming back the next day or so.


SLEEP: Turns off all unused devices (wireless, CD/DVD ROM..) and saves energy. Your laptop in this case is ON but with low energy usage.

HIBERNATE:  First you have to know that the RAM in your laptop holds programs that are currently running. When you hibernate your laptop, all data stored on RAM are copied to a system file and stored there. Your laptop is then completely turned off, and when you turn it on a copy of this system file is sent to your RAM so that you won't notice a change.


-Sleep your laptop when you want to use it in a little while.
MAC

-Hibernate your laptop when you want to save all your work but use your laptop later on (next day).

-Turn off your laptop when you no longer need to use it and have nothing to save. 



* Laptops are set by default to hibernate when they are in sleep mode with a low battery percentage.

Saturday, June 4, 2011

Take Care of Your LAPTOP'S BATTERY!!

Most people never read the "users manual" that comes in the package with their new electronic device. This leads to misusing the device and results in many problems.
One of the most issues resulting in misusing your device, is the way you deal with the battery.

This article is dedicated for laptops batteries.
To make things easier, your laptop's battery is one of three:
1-Lead Acid Battery.
2-Nickel based Battery (NiCd and NiMH).
3-Lithium-ion Battery (Li-ion, polymer).
Lithium Battery
Check your battery type by reading the description written on the battery itself, or by referring to your users manual. Oh! You lost your user manual, then just go online and check your device's specifications.



I) BATTERY LIFE:
Batteries life varies according to their type, but for the 3 mentioned types a battery will last between 3 & 5 years if treated carefully.

II) CYCLES:
A cycle is defined by draining a fully charge battery(100%->0%) then charging it again.
Each battery has a certain number of cycles. (The number of cycles is also written on your battery).
-Lead Acid:500-800 cycles.
-Nickel Based: 500-1000 cycles.
-Lithium-ion: 500-1000 cycles.

III) DEALING WITH YOUR BATTERY:
A battery has a life and limited number of cycles, but these two factors are not the only reasons that affect the battery's functionality.

Two main reasons are:
a-Charging and discharging your battery:
You have certainly heard a lot of OPINIONS concerning when to recharge your battery.
Some say that you have to completely drain it first, others say that draining your battery harms it.
Well, here is the scientific answer: IT DEPENDS ON THE BATTERY TYPE.
b-Temperature:
Don't keep your battery under too high or too low temperature. This will harm your battery too.
Cold temperature increases internal resistance and diminishes the capacity, while high temperature will speed up the discharging process.



Refer to the table below to get more details about each battery type.



Saturday, May 21, 2011

FINALLY ,My First APP is now available on the AppStore!!

I'm a new iPhone/iPad developer. I've been studying for that for about three months, and i've finally achieved my goal which is seeing my name on the appStore.


During these three months of hard working, i learned objective-C which is the language used for programming, and i learned everything related to iPhone/iPad development.
Last week, i had a 3 hrs break at uni. So i created a simple application and i called it "The Love Meter HD".
We all know the classic love meter that displays on some TV channels. Well, this is a similar one.
All you have to do is to enter your name and your lover's name, and click on the "calculate" button.
The result will be displayed in percentage.

It's really simple, and i thought of making it look better. So i worked a little bit on the design of the layout. And then i decided to upload it and see if it will be approved.
After 5 days, a received a msg from Apple Inc. and my app became available on the app store.
Yesterday i got my daily sales report, and i found out that THREE copies of my app were sold :D:D

This is just the beginning and i'll be creating more and more applications in the future.

Wednesday, May 18, 2011

Uninstall your ANTIVIRUS program!!

As soon as you buy a computer or a laptop, the first thing u think of is to get an antivirus that KILLS and removes every single virus that will threaten your pc's life.
But let me tell you something. I've been using my windows7 for like a year, and hadn't been using any kind of antiVirus programs. My laptop is still as good as new, and not a single virus attacked it.

"POP, virus found"
Didn't you realize that the moment you install your antivirus program you start getting viruses , too many viruses that your STRONG antivirus is handling each and every second. Well, let's be honest. Who is responsible for those viruses? It's either a computer geek , most probably a 'hacker', who achieves success when he is able to create a virus and OOps it's spread all over the world. Or it is those antivirus companies that work day and night to ensure that there are still viruses all of the internet, so they can sell as much softwares as they can.

But let me enlighten you a little bit. You install an antivirus, it "scans" your computer for viruses and find tens of viruses that were in your pc for all of this time! But the funny part is that most of the time these tens of viruses didn't affect your pc in any way.

Antivirus programs are a heavy weight, they make your pc tooooo slow that you can't use it for it's basic functions.
Oh , but even antivirus programs can't remove all different kind of viruses!!

I advice you to go and Uninstall whatever antivirus software you've installed on your pc.
Well, if i didn't get any virus for all this long duration, then that doesn't mean that you are not going to get one.
So here's the solution:
A virus is not called a virus until it harms or affects you computer in a way.
So let's say that you are affected with a virus when you see a critical issue in your computer.
What you have to do then is googling your problem and you'll find thousands of ready, easy, and simple solutions for you problem.

Enjoy!