Tecnology 2016
February 2 /2016
Today we did a practice on excel about formulas to find the volume and area of different geometric shapes.
Practice
February 9/2016
Today we did a practice about the sum.if function in excel.
Practice
15/03/2016
BrainsBashers: network
12/04/2015
2nd Term
Problems for the invention of technology devices:
1) Cellphone:
-Created by: Martin Cooper.
-Created to: solve the race to create truly portable telephone devices began after World War II, and the problem of communication in the early 1910 when it was nearly impossible to communicate with someone if that person wasn't at their house.
-Main Problem:The first ones supported few simultaneous calls, they were very expensive and heavy.
-Main Solution: They reduced the size wich was unpracticall and wasn't spreading on a public matter yet. They also made longer lasting batteries and made them more affordable.
2) telephone:
-Created to: Shorten distances between people who are far away from each other and making it fast and easy.
-Main Problem: People had to shout to overcome noise and there was a time lapse in the transmission wich resulted in incoherent conversations.
-Main solution: by changing the design multiple times, the problems were resolved. The phone underwent changes like a moveable listening earpiece and a stationary speaking tube wich improved the design of the original telephone.
3)Computer:
-Created to: solve logicl and mathematical problems instantly.
-Main problems: compared to the computers we have now, the memory of the first computers was very unreliable due to the lack of semiconductors, instead, they used very expensive systems based on the use of magnetic core arrays and telephone exchange, which made the bigger and slower.
-Solution: with the invention of semiconductors, after centuries of investigation, the early computers became smaller, faster and easier to operate.
4) Radio:
-Created by: Many people were involved in its creation, including: Hans Christian Ørsted, André-Marie Ampère, Joseph Henry, Michael Fraday , James Clerk Maxwell, Guglielmo Marconi and Nikola Tesla.
-Created to: Create a wireless communication system.
-Main Problems: The first Radio had a static problem that couldn't be eliminated. At the time, radio was transmitted via amplitude modulation (AM).
Solution: Edwin Armstrong invented the frequency modulation radio (FM). Due to this, transmissions had great quality and the static disappeared.
5) GPS:
-Created by: Roger L.Easton, Ivan A.Getting and Bradford Parkinson
-Created for: Millitary and intelligence applications during the cold war. It was inspired by the Soviet spacecraft Sputnik.
-Main Problems: The US military, fearing that the GPS could be used against them, decided to deliberately decrease the accuracy if the system in 1990.
-Solution: In 2000 and after the gulf war, the US military decided to end the purposeful degradation of GPS. The accuracy improved overnight and all kinds of companies started to use it.
6) TV:
-Created by: TV was the result of the work of many people during the 19th and 20th centuries. The most influential were: Paul Nipkow, Charles Jenkins, John Logie Baird, Allan A. Campbell-Swinton and Philo Farnsworth.
-Created to: Make profit and change the world through visual and audio communication technology.
-Main problem: Many people worked on the design of the first TV, but the main problem during its creation was that the image had bad definition and in some early designs, moving image wasn't possible.
-Solution: John Logie Baird used the Nipkow disk in one of his designs and transmitted image and movement through radio waves. This system managed to produce an image of a face and in 1932 the system had reached a peak of 240 lines of resolution.
Scratch: Videogame
31/05/2016
How to improve a device used for communication
Radio:
Third period
-¿Usa el conocimiento tecnológico para facilitar una actuación efectiva sobre los productos novedosos?
-¿Cómo se solucionan problemas a través de el uso de algoritmos?
Desempeños:
12/07/2016
Chain reaction
Domino effect
Butterfly effect
19/07/2016
Computer programming
Definitions:
1) Computer language: a computer language is a language used to give instructions to a computer to create software.
2)Algorithm: an algorithm is a logic sequence of actions to complete a task.
3)Library: is a set of codes and commands to complete certain instructions.
4) Cycle:is a repetition of instructions or actions the computer must do.
5) Loop: is an infinite cycle.
6)Variable: is a different type of data used by the program.
Examples:
1) #include
using namespace std; : cout<<, cin>>
int main ()
{
int num,num2,result;
cout<<"please give me a number:";
cin>>num;
cout<<"please give me the second number:"
cin>>num2;
result=num+num2
cout<
26/07/2016
First programing activity
02/08/2016
Second programing activity