Sunday, February 27, 2011

Twitter


In what ways did twitter help people in Christchurch?
Twitter has helped the people of Christchurch in many ways. The main example of this is when people were tweeting for help when they were under the rubble. They tweet that they are alive and there location so that they can be rescued. Also It helps people who are missing people to try and help find there missing or the missing to tell there relatives where they are.
Quote examples of tweets that show the different uses?
An example is when Someone tweeted that they had hundreds of bottled water in there factory once this tweet was out, people flocked to the factory to collect these bottles of water because Christchurch had no running fresh clean water. Another is  when A man had lots of meat in his frezzer, but because of the power cut he needed to get rid of it. So he tweeted for everyoen to come around and he had a BBQ with evryone who saw he tweet because of course there is a lack of food in Christchurch at this time.
How do people use the Twitter functions?
The functions on twitter are easy to use and very accesiable because you don’t even need an account it is now a very good search engine, because its efficient and real time. Instead of texting one person on a phome tweeting allows the whole world to see your tweet. Also there is no need to sign up which can be very helpful quick to use.

Why is twitter good in a crisis?
It is good because it is a good way of communicating with others for help or loved ones for comfort. Twitter can never be shutdown therefore it will always be  available compared with txing. It also does not cost to use so it would help those who would need urgent help because obvisouly they wouldn’t have money. It could also be used to orginise meetings and events. Also it can help raise money for the people involed in the crisis.
Compare it with Facebook?
Twitter does not sell your private information like facebook so your safe there. Also when tweeting the whole world can see it while with Facebook only friends can see it. Also Twitter you can use it while not having to sign up like Facebook does. Facebook also does not having regular tweeting like Twitter.

Monday, February 21, 2011

Excel

Save as …. Save As Type … excel workbook
=lookup is look up function
All forumlas have brackets.
Example of what we are doing =lookup(THIS, HERE)

Do not highlight titles when you highlight lists

Type name to replace number you must press enter otherwise it won't confirm

Always rember commas

Sunday, February 20, 2011

Excel

These are required in the use of excel.

1. Import CSV- (comma separating values)

2. Absoulute and realative referances- A1 is cell referance.
Relative cell refernce is when it changes depending on where you paste it.
A aboslute reference is where its is absoluting always going to refer to that cell.

3. Named cells - makes reading cells easier
    Named ranges- naming a group of cells

4. Sum, average, maximum, minimum, integer, rounding, counting, if , lookup

5. perform searches using AND, OR , NOT, LIKE,  >,  < ,  = , >= , <=
  filtering searches like google.

6. Perform searches using wildcards

Wednesday, February 9, 2011

Software-utility software is used to change the system(control panel in system prefrences)
               A set of commands
              opperating sytem
              aplication
Hardware-the physical componets in a system

Input device eg keyboard, mouse

Cpu(central procssing unit)

Rom- read only memory, doesnt change.. rom stays permennant and Non volatile

Ram- random access memory, contiously changes, holds whats going on now

Hardive- secoundary storage( holds for days)

Output- eg printers ( four catergories)

Interface- GUI ( graphical use interface)

WIMPS- Windows, icons, menus, pointers