UNIT 7: COMPUTERS

7.1.- TECHNOLOGIES IN OUR LIFES.
People are very impressed by the fact that computers can solve all kinds of math problems, sotre records, act as intelligent typwriters and run a Nintendo game.
Computer can also control the operatation of a car engine and record time on the face of a digital watch.
But are the computers smart?
Although computers can do all these things, they still can´t think. Thera are just electronic devices that can be turned on or off like a radio or television. But they can change and improve our lives and the world we live in.


Conversation: LINK
Mark: Hey, Mike. Here's a question. Do you think teenagers these days, have a better life than say we did when we were teenagers?

Mike: Well, it's, that's a debate that's been going on since the days of Socrates and Plato, I think, but again, and probably like Socrates had said himself, "You know kids today are a lot different than they were when we were younger", that's for sure. Whether it's better or not, I personally think we had it better because we weren't stuck behind a computer or behind a TV set all day. I think we tended to do things more outside, but I think whether you're a teenager now or then, probably the same kind of issues went on in your head.

Mark: Yeah, that's the way I feel about it, actually.

Mike: Think so.

Mark: Well, these kind of, these kind of debates or these kid of issues, I feel like there is no better or worse, it's just different, you know.

Mike: How do you think it's different?

Mark: Well, in obvious ways, like the technology now. Like I can remember the first, my first microwave and my family's first VCR, and those were, you know, pretty exciting moments, yeah, absolutely.

Mike: How's about going to the library to have to get research.

Mark: Yeah! That's interesting, but people don't do that much anymore and I don't even realize that, but yeah the technology is definitely better now, but it's more addictive. I mean kids don't play outside. They just play video games all day and you know, I wasn't allowed to stay inside so much when I was a kid.

Mike: Same here. Same here. I was sort of forced to go outside, but also, although, I guess you could make an argument and say the kids do kind of play with each other when they get on those, the internet gaming sites, and there's a whole group of them from Morocco to Mexico to Canada to the States, all playing online, of course, they never see each other but they're all trying to kill each other.

ACTIVITY  Nº1: "Conversation about Teens and Technologies"
a)  Complete these sentences alfter Reading the following conversation.
  • a. Video games can be ___________
  • b. Some children are________ behind a computer all day.
  • c. They are not sure________ teens have it better today.
  • d. Kids____________ to stay indoors more these days.
  • e. Mark was not _______ to stay indoors on a nice day.
  • f. The most_________ difference today is technology.
b)  Explain what do you think about the question: “Do you think teenagers these days, have a better life than say we did when we were teenagers?”



ACTIVITY  Nº2:  "Reading Comprehension".
a) Choose a text ( A, B or C) read it and answer the questions in your Blog.
b) Make a summary about these report.




7.2. SCIENCE COMPUTER SYSTEM.


Open publication - Free publishing - More educacion

ACTIVITY Nº3: "INFORMATION SYSTEM"
Copy in your blog the following questions and theirs answers:
a) Make a picture about an information system.
b) Give four common examples of information system.
c) Make a table with several advantages and disadvantages using a computerised information system.
d) What is the different between software and hardware?
e) List the five categories of hardware.
f) Explain what is meant by the following terms: a) Operating System, b) Machine language



7.3 HARDWARE AND ITS COMPONETS. 

- How do you use a computer to find, process, organise, present and store information.
- What are the basic componets of a personal computer? How are the used and connected?. What is their function in a computer?
- What are the basic operations performed by an operating system?
  
LINK UNIT2: Hardware_and_Componets.
 

A) WHAT IS COMPUTER SCIENCE?. 

Computer science is the techniques and knoledge necessary to automatically process information using a computer.
A computer works like a system that collects INPUT data, processes it (organises, saves and transforms) and transmit into OUTPUT information.


B)BINARY CODE. What is a byte?

Computers use binary code. 
The "brain" of a computer (microprocessor) has millions of tiny switches that are activated and desactivated automatically. When a switch is open, the microprocessor interprets this as a "0" and when it´s closed as a "1". Each of these digits, either 0 or 1, is called a bit (digit binary) and a group of 8bits is called a Byte.

And example of a binary code is ASCII. It is used to represent all the characters used on computers. Each symbol or letter is encoded by a group of 8 bits. 

The value of the binary numbering systems depends on their position in the group (like in decimal numberin), in this case the value is determined by a base-2 system.

* To convert a binary number into a decimal number we foinf the successive powers of 2, starting with 2^0, followed by 2^1, etc.
Example: 1011=1*2^3+0*2^2+1*2^1+1*2^0= 8 + 0 + 2 + 1 + 0 = 11
* To convert a decimal number into a binary number we divide the decimal number by 2 successively until the quotient is 1. Then you put the remainders of the quotients in order from right to left.
Example: (25/2=12 remainder=1); (12/2=6 remainder=0); (6/2=3 remainder=0); (3/2=1 remainder=1); therefore: 25 = 11001



ACTIVITY Nº2. 
a) Make a table with the multiples of a byte.b) How many bytes are there in 5KB, 8MB, and 10GB. 
c) Look at the order ASCII code uses to represent the first six letters of the alphabet.
d) Convert the decimal number 27 into binay number.
e) Convert the  binary number 11101 into a decimal number.
f) Convert the decimal number 255 into binary number.
g) Convert these units:  2^10KB= ______MB.




  C) COMPUTER COMPONETS: HARWARE.

Hardware are the physical componets of the computer, such as internal circuits, the wiring, monitor, keyboard, printer, etc.

  • CPU.
  • MEMORIES: RAM and ROM.
  • STORY DEVICES: magnetic, optical solid state. 
  • PERIPHERAL DEVICES: input, output or input/output. 
ACTIVITY Nº3.
a) Make a picture explaning the hardware of a computer.
b) Find out how a chip is made of.
c) Find out what kind of CPU is working nowdays. List two of them with theirs features.
d) Find out how many types of  RAM memory are?

e) Make a table where you can compare the capacities of the differents storage devices.

f) Find out the types of monitors are. Drescribe it.
g) Make a set of slides about a componet and upload it using www.slideshare.net . In this case you have to look for information into the file that you can link over here: ICT2_HARDWARE


ACTIVITY Nº4.
Look for two bargains about informatic equipment of BLACK FRIDAY AND CYBER MONDAY. Show it in PowerPoint and then use CAMTASIA to play it. Upload the video on YouTube and put the link into your blog.

News about this event: here
Ofert ATT: here
The blackfriday: here
Here are some shopping offerts:
BESTBUY
WALMART
AMAZON
APPLE

ACTIVITY Nº5:

a) WORK_SHOP

b) CROSS_WORD

c) QUIZ