Monday 25 June 2012

Things to consider when shopping for a hard drive:


                                
A Hard disk or Hard drive is the place where you are keeping your Operating System and other data.Here I am putting some points before going to buy a new one.

1. Cache The cache of a Hard drive is a faster media than the hard drive itself,
which is normally 2MB (in low-end), 8MB (standard), or 16MB (large
disks only) large. The existence of a cache increases the speeds of retrieving
short bursts of information, and also allows prefetching of data. Most
modern hard drives have 8MB cache, which gives better performance when
compared to 2MB.

2. Form factor 3.5 inch drives are usually used in desktops; 2.5 inch drives are
usually used in laptops.

3. Capacity The smallest desktop drives that are widely available hold about 160
gig of data, although the largest drives available on the market can contain
1TB (1000GB). Few people will need disks this large—for most people,
somewhere in the range of 160-300GB will be sufficient. The amount
of space you will need can depend on many factors, such as how many
high-end games and programs you want to install, how many media files
you wish to store, or how many high-quality videos you want to render.
It is usually better to get a hard drive with a capacity larger than you
anticipate using, in case you need more in the future. If you run out ofspace, you can always add an additional hard drive using any free IDE or
Serial ATA connector, or through an external interface, such as USB or
FireWire.

4. Rotational Speed The speed at which the hard drives platters spin. Most
laptop (2.5 inch) drives spin at 5400 RPM, while common desktop drives
come in at 7200. There are PATA and SATA drives that spin at 10,000
RPM and some SCSI drives hit 15,000. However drives above 7,200 RPM
usually have limited capacity, and a much higher price than comparable
7,200RPM drives, making drives above 7,200 RPM advisable only when
the fastest possible speeds are required.

5. Noise and Heat Modern hard drives are fairly quiet in operation though some
people are sensitive to the faint hum and occasional buzz they do make.
If your HD is loud, its time to think about replacing it.. Some hard drives
can also throw a lot of heat and additional cooling may be needed. If your
case is not very well ventilated, this is something to be concerned about.
There is software available that will allow you to monitor both the health
and temperature of your hard drive(s), its a good idea to check from time
to time.

6. Warranty Many manufactures offer warranties ranging from 30 days (typically
OEM) up to five years. It is well worth spending an extra few dollars to
get the drive that carries a longer warranty.

7. Interface of a drive is how the hard drive comunicates with the rest of the
computer. The following hard drive interfaces are avalible:

• Parrallel IDE drives(PATA) use cables that can be distinguished by
their wide 40-pin connector, coloured first-pin wire, and usually gray “ribbon”
style cables. This technology is losing popularity because SATA uses
thinner cables, eliminates contention for the IDE bus that can occur when
two PATA drives are attached to the same connector, and promises faster
drive access.
• SATA drives have the advantages outlined above. If you want Serial
ATA, you will either need to purchase a motherboard that supports it, or
purchase a PCI card that will allow you to connect your hard drive. Note
that some older motherboards will not allow you to install Windows XP
to a Serial ATA hard drive.
• SCSI, although more expensive and less user friendly, is usually worthwile
on high performance workstations and servers. Few consumer desktop
motherboards built today support SCSI, and for building a new computer,
the work needed to implement it may be outweighed by the relative simplicity
and performance of IDE and SATA. SCSI hard drives can reach rotational speeds of up to 15,000 RPM, though these are generaly prohibitively
expensive.
• USB or IEEE1394 can be used for connecting external drives. An external
drive enclosure can convert an internal drive to an external drive.


Sunday 17 June 2012

How to improve the speed of the computer

                       


                                    Is your computer going behind a sloth?
                                                 
Here are some tips to improve the system speed.


1. Remove unwanted start up programs from the computer.


Press Windows Key + R to open a run dialogue box, type msconfig, and hit enter to bring up the System Configuration menu.


Click the Startup tab at the top and deselect boxes of any programs that you don't want to start up with Windows.

 








2. E
rases Internet history and other unused files, and cleans up orphaned registry entries.


for this purpose you can use a free software ccleaner. Click Here to go to the download link.




3. Do defragmentation.


Open start-->computer and select a drive to do defragmentation.
for example c: You will get a prompt like the following. Click on "Defragment now" .It will take a long time.But will surely improve system speed.






Tuesday 12 June 2012

Google Translate

Google Translate is a free statistical machine translation service provided by Google Inc. to translate a section of text, document or webpage, into another language.

Shall we do it?
step1:

type http://translate.google.com/ 

step2:
So that you will get a prompt as follows.
 step3:

 select the language to which you want to convert the text.


 step4:

In this example I selected the translation language Tamil,so that the same is there in the right side text box in Tamil.


Thursday 7 June 2012

Android version code names and mobiles.


                       
Android is a Linux-based operating system for mobile devices such as smartphonesand tablet computers. It is developed by the Open Handset Alliance, led by Google, and other companies.

Many people refer to Android versions by "codenames" rather than version numbers (e.g. Android "Gingerbread"). What are the names of the various versions of the Android OS, and how are these names chosen?
After a careful look , you may have seen that these names are all in alphabetical order.

See the list.


Cupcake:
  • Android 1.5

Donut:
  • Android 1.6
Eclair:
  • Android 2.0, also 2.0.1
  • Android 2.1
  • Android 2.1-update1
Froyo: (short for "frozen yogurt")
  • Android 2.2, also 2.2.x updates
Gingerbread:
  • Android 2.3, also 2.3.x updates
Honeycomb:
  • Android 3.0, also 3.0.x updates
  • Android 3.1
  • Android 3.2
Ice Cream Sandwich:
  • Android 4.0
Future Versions
  • Jelly Bean (Rumoured to be Android 5.0 - stated by ASUS, not officially confirmed by Google)
  • Key Lime Pie (unconfirmed)
The pre-release versions of Android were dubbed Astro and Bender, but these names could not ultimately be used for trademark reasons.Now the most recent update to the Android OS was Ice Cream Sandwich v4.0.4, which was released in March 2012.


         Some mobile phones with Android Operating System.
            Verizon HTC DROID ERIS Android Phone
                  HTC DROID ERIS running with Android Cupcake OS



                     
                             Samsung Spika running Android Donut OS


                                 Pictures of  HTC wildfire updated to android eclair to froyo

                           HTC wildfire running Android Eclair OS



                                                File:Nexus One.png
                               Google Nexus running Android Froyo OS


                      

                                Google Nexus S running Android Gingerbread OS



                                     Android Honeycomb HTC G1 Magic
                           HTC D1 magic running Android honeycomb OS

  

                                         

            Samsung Galaxy Nexus running Android Ice Cream Sandwich OS

                                                                             Waiting for the Next....................