Friday, 28 September 2012

Images

when you save an image form the Internet to your computer or mobile device you will have one or two different file options to save it as, for example 'J.PEG' or 'GIF'.

In fact there are many different ways you can save an image, the min difference between all the options is the file size. Often 'J.PEG's are very small, in comparison to a 'bitmap'  which are very large.

From a standard view most of the different types of files look very similar if not the same, its when you zoom in that the differences occur.

here are two images. both of these images are of the same thing, exept one is a jpeg and othe other a bitmap, they look idenditcle when put next to eachjother at this level
but if you were too zoom in you would clearly see the difference.

the image file jpeg you be more pixalated as its a smaller image then the bitmap.


Friday, 21 September 2012

Mobile Phones

Mobile Phone Networks
- Orange
- O2
- Vodaphone
- Virgin mobile
- T-mobile

Service providers
- Orange/T-mobile



- O2
- Vodaphone
- Virgin mobile
- T-mobile/orange

Manufacturers.
Nokia
Samsung
Sony
Black-berry
Apple
HTC
LG

Opperating system
Android
Windows
OIS

Thursday, 20 September 2012

How mobile phones work!






your mobile phone is constantly trying to find the closest and best signal.
it does this by sending out radio waves and waiting for a receiving signal, the first radio wave to be received back is in theory the clearest and  best signal.

Mobile phone receivers are placed in different location as to try and give u the best signal even when you are on the move!


When you make a call using you mobile phone, a signal goes from you phone to a receiving cell, it then get verified, (this means if you have no credit on your phone, or if you contract has been terminated you will be stopped at this point) assuming your phone has been verified your signal will get transmitted to a 'mtso' (mobile telephone switching office) which will change the direction of your call to the person you are trying to call. this is required for example if the person you are calling is part of a different telephone network to you. the signal then goes to the nearest cell to the person you are trying to call, and then goes form there to there phone.



http://soni2006.hubpages.com/hub/benefits-of-mobile-phones-how-cell-phones-work-where-to-buy-them



Tuesday, 18 September 2012

blue tooth. this a system that has been developed so that people can wirelessly send music or pictures to other devices that are able to use blue tooth.

mp3 player. and mp3 player is something that can play an mp3 file, and mp3 file is sound file, perhaps a song or voice recording,

GPS. Global positioning service a service that allows the device to connect to satellites and can track your location,

calculator. a calculator is a device that enables you to do hard mathematical sums without using your brain. it effectively does the sum for you and provides a correct answer, assuming  you put the equation in correctly.

internal memory. the internal memory of a device is how much memory a device has without the use of a memory card or external hard rive.

memory Card. A memory card is some thing that can be placed into another hard drive or device that allows t to store more information, for example music, or word documents, depending on the device you are plugging it into.

Camera. is a a device that allows you to capture still images of real life, for example, if you are at the beach, a camera would allow you to take a still image of what you are seeing. this could be on a phone or laptop as many of these devices have in built cameras.

video camera. is a device that alows yoy to capture moving images many people use them to record important or sentimental occasions, but are often used to capture funy or humerious events. a videocamera is also something that is generally part oif a phone.

video call. a video call is similar to a normal telephone call, but enables the ability to see the person that you are calling, this can be done using software sch as 'skype' or even some phone have this ability.
Ict day 1,

Not really 100% sure what I'm meant to write here, so I'll just talk about nothing.

First lesson of IT we started talking about communication eg Mobile phones, and how they have changed an how they will change. but mainly talked about starting up a blog, and here it is....