Wednesday, July 28, 2010

Handheld Computing

1. What are MID and UMPC devices? How do they differ. List at least three examples of both types of devices &examples. include images.
MID stands for mobile internet device. It is a multimedia-capable mobile device providing wireless Internet access. It is a consumer class lifestyle device and runs a "lightweight" Operating system.Optimized for things like media playback and web surfing.

UMPC stands for ultra mobile portable computer. It is a business-class device for enterprise users and runs a "heavy" OS like Vista. it is also Optimized for office-use applications like Excel, Word, etc.

Just in the definition of these two devices, you can see the differences.

Examples:
UMPC

  • Viliv N5 - [notebook UMPC]
  • MSI Windpad- [Tablet UMPC]
  • Fujitsu UH900-[notebook UMPC]

MID
  • Laptop
  • Itouch
  •  Nokia N810
2. What are the differences between a Notebook handheld computing device and a Netbook handheld computing device?
  • Screen size for net book- usually 7, 8 or 9 inches monitor screens but for a note book the smallest that they go into is 12.1 inches.
  • Notebooks- has dual core processor. it can run Windows XP or vista. It has a large, regular hard drive that spins.
  • storage-  Notebooks can have anywhere from 80 to 320 Gigabytes of storage onboard.
    Whilst netbooks have only 4Gb to 80 Gb
  • Netbook- is not for loading games or applications such as photoshop or word.
  • Net book- useful for net-centric computing. Net centric computing is surfing the web, checking your e mail, running web applications
  • Net book- mostly come with the atom processor. Nitebook- Dual processor
  • DVD drives- Notebook includes isk drive whilst net books don't.
  • pRICE: REGULAR PEOPLE CAN AFFORD NET BOOKS VERY CHEAPLY.
  • Net books operating sysytem is either windows XP or Linux whilst Notebooks -WIndows XP or Vista
  • Batteries and battery life: Netbook- 3 to 4 hours. Notebooks- 2 to 4 hours

Tuesday, July 27, 2010

1) A digit is either a 0 or a 1.
2) 0,1,2,3,4,5,6,7,8,9
3) The word bit cames from the word binary digit
4) Binary numbers do not use base 10. They use base 2. The digits available in base 2 ore 0 and 1.
5) BASE 10 } 4, 321 = (4*1000)+ (3*100)+(2*10)+(1*1) 
6) BASE 2} 21 = 10101
                     24 = 11000
                     30 = 11110
7) 8 bits make a byte
8) 1000 Bytes = 1 kilo byte
    1000 kilo bytes = 1 megabyte
    1000 Megabytes = 1 Gigabytes
    1000 Gigabytes = 1 Terrabytes

9)

MEMORY

In its very essence computers are a combination of a number of digits.

Bit: 0 or1 (one digit)

8 bits=00000000 or 11111111 or 00001111 or 11110000 and so on...... = 1 byte

1000 Bytes = 1 kilo byte
1000 kilo bytes = 1 megabyte
1000 Megabytes = 1 Gigabytes
1000 Gigabytes = 1 Terrabytes

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Everything a computer does is made up of 0s nd 1s
there is an ASCii code
Eg. the ascii code for "a" is 01100001
       the ascii code for "b" is 01100010

Wednesday, July 21, 2010

CPU [central processing unit]

1. What is the function of the CPU?
     Cpu accepts input data, processes the information and sends it to the component that is in charge of executing the action.


2. What was the name of the first CPU?
    Intel 4004, created in 1974

3. Referring to the graph on page 2 of the article, describe how the speed of CPU’s has changed.
   The speed of the Cpu has changed rapidly throughout time. In just 30 years [1974-2004] the data width cahnged from 8 bits to an amazing 64bits. That is a drastic change.
4. What does MIPS measure?
MIPS is short for "millions of instructions per second" and is an approximate measure of the performance of a CPU.

Most modern PC’s use what are called dual core processors. It is often stated that such processors improve multitasking.

5. Research (Google it) what is a dual core processor, what is multitasking and how do the two work together.
A dual core processor is part of a category called multi-core processors. These computer processors have more than one independent processor on the chip or package.
In the case of dual core processor, the entire chip has two independent computer processors that can work together to increase total computer performance.

Thursday, July 8, 2010

BROADBAND & BANDWIDTH

What is broadband?
Broadband is actually a shortened word for broadband Internet access, and is a high data rate Internet access. It is often juxtaposed with Dial up access which is a relatively low rate internet access when compared to broadband.

What units are used to measure bandwidth?
Through bits per second
How much faster is broadband than dial up?
Dial up can only go up to 56K, while broadband can go up to 4 times that.

What are the speeds that broadband operates at compared to dial up?
Dial up- 58Kbps
Broadband- at least 200Kbps
What are some of the advantages of using a broadband connection to download something like a video compared to dial up?
Basically the advantage is speed. Broadband has faster transfer feeds. With boradband connection most music and videos can be downloaded from ITunes legally in less than 1minute. On a dial up connection it would take 10-15minutes to download on a 56kbps.

PROBLEMS

As with any other project, we faced a number of problems within our IST video, but of course we overcame all those problems with solutions and alternatives:

There was one major problem I faced was when I was editing. Since I have windows movie maker, instead of windows live movie maker 07, the project I made at home did not open in the computers at school. Luckily I had made a movie out of my half finished project so that I was able to show the movie to members of my group. Then sir told us to use the "split" tool so that we could cut the movie into separate clips and put effects/transitions/angles/shots into our movie.

When we transported the files from the phone (because we shot our video with a phone) to the computer, our audio was not playing. When we opened it with the VLC player it said 'The audio format could not be played because it was not supported by the program'. Therefore sir told us to use a programme called "Zune converter". We converted our video into a mp4 [audio + video] format and soon we could hear the audio.

When we were planning to do the credits, we wanted to play the credits on the side and have our bloopers playing on the other side, just like how you see it in some movies. later on, we could not work out how to do this as there was no option in "Windows live movie maker". Therefore we decided to use the "caption" tool in on top of the videos. Suppose if it was the blooper video of the host, then the caption would be “host-Priyanka” (I was the host by the way)...
This way we achieved a solution for the credits which was similar to our original idea.