Vocabulary:

-monitor glass

-brominate residuid

-electronic recycling

-electronics ways

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problems:

the problem is that there is too much pollution in the planet because of electronic waste, which is highly polluting

  

solutions:
the problem is that there is too much pollution in the planet because of electronic waste, which is highly polluting

QR CODE

A QR code (Quick Response Barcode) is a system for storing information in a dot matrix or a two-dimensional barcode, are characterized by three squares that are in the corners and to detect the position of the code reader. The letters "QR" is derived from the English phrase "Quick Response" because the creator code aspired to allow its contents to be read at high speed.




Apps to read QR codes

To read or interpret a QR code requires a device with a camera and a compatible reader. Previously, these requirements were a major inconvenience. Only firms readers could have designed exclusively for this.

But now, thanks to the new generation of mobile phones, most of the eligible population. Hence, in recent months, its popularity has grown
In the market there are several software applications that let you read or formats and QR codes,for example

Task 1

1. Put a cross in one box to show which aspect of daily life would not be affected immediately by the failure of an associated ICT system.
   C.Feeding your pet.

2. Describe the similarities and differences between data and information.

   Data: This is the raw information to be proccesed.(unproccesed information)

   Information: Is data that people understand. 

3. Explain what is meant by hardware.
 Computer hardware is the equipment that makes up the physical ICT system. That is, the keyboard, the monitor screen, the system unit and everything inside it, and other devices connected to it, such as a printer. Usually, the monitor, keyboard and other devices are connected to the system unit.

4. Draw a labelled diagram of a desktop computer system showing the range of hardware devices that could be attached to it.








5. Describe the similarities and differences between a desktop computer and a laptop computer.
    Desktop computer: Usually has these basic components: a monitor, a keyboard, a mouse.

    Laptop computer: A laptop computer is slightly larger and much heavier than an A4 file.

6. Describe the similarities and differences between a desktop computer and a hand-held computer.
    Desktop computer: That are basic components.

    Hand-heldcomputer: Can fit in one hand or in your pocket, but it is too small for general work. Hand- held computing devices can perform a range of activities such as personal record-keeping and satellite navigation.

   

7. Explain how a PDA user can benefit from having an external keyboard.
    A PDA usually has a touch-sensitive screen. Although PDAs can be temporarily attached to   a keyboard, you cannot comfortably type a long document into a PDA. A smart phone is a mobile phone with the functions of a PDA. 

8. Figure 1.2 shows the flow of data through the input–output process. If the input was the intake of pupils into a school, describe what would represent the
‘PROCESS’, the ‘INSTRUCTIONS’ and the ‘FINAL OUTPUT’ (see Figure 1.8).
    Process: the class
    Instruction: the different activities
    Final output: the notes , skills


Task 2

1. Find out what type of motherboard you have installed on your computer. Locate the BIOS ROM chip on a motherboard. What make of BIOS ROM is it?
  Gigabyte Technology Co., Ltd. GA-MA69VM-S2 x.x
Versión del BIOS : F8
Fecha : 02/03/2008The BIOS is part of the booting up process during which the configuration of the computer is checked and the operating system loaded, so that everything is ready for the user to start work.
   

2. Identify the main components on a motherboard. Draw a diagram to show the position of the processor chip, the BIOS chip, the battery, the power supply connector, the memory slots, the expansion slots, the ports and other important components. Look at how components are slotted into place.   



3. Turn on your computer and watch the POST process. Note what happens if one part of your system is not working or has been disconnected (such as a LAN cable). 
 So it pass to conected with the other part of the computer that you choose, but its aconsejable to put the firts part de CD/DVD because you can put a CD to repare the problem.

Task 4

1. Locate  the processor on a motherboard. What cooling  device  is used?
    the processor is the central processing unit (CPU) is connected to the PC via a socket.
is covered by a heat sink and sink above is a fan to keep it cool, they tend to heat
2. Research the Internet for data on heat sinks. What materials might these be made from?
heat sinks for computers generally are made of aluminum
3. Research the Internet to find out what happens (and at what temperature) if the fan stops working on a PC, or the heat sink is removed or not connected properly to the processor chip.
what can happen if none of these things work is that the computer to overheat and burn you or melt some chip inside the computer or

Task 5
1 .  What types  of internal  memory are being used in your computer? How much is installed?
memory RAM:2gb; hard disc;50gb; ROOM BIOS:                ;RAM C MOS:         CACHE MEMORY:
2 .Research the Internet to find out how much cache memory  is used in a number of PCs with different specifications

 ACTIVITY Nº1.

a) Make a summary in your blog about this concept.

Explain how it works using a drawing (input/process/output).

Computer science is the techniques and knoledge necessary to automatically process.

A computer works like a system that collets:

                                
                                   

_______________________________________________________________________

ACTIVITY Nº2. 

  

a) Make a table with the multiples of a byte.

Byte (B)  1 Byte = 8 bits

Kilobyte (KB) 1 024 Bytes = 2^10

Megabyte (MB) 1 048 576 Bytes = 2^20

Gigabyte (GB) 1 073 741 824 Bytes = 2^30

Terabyte (TB) 1 099 511 627 776 Bytes = 2^40

Petabyte (PB) 1 125 899 906 842 624 Bytes = 2^50

Exabyte (EB) 1 152 921 504 606 846 976 Bytes = 2^60

Zetabyte (ZB) 1 180 591 620 717 411 303 424 Bytes = 2^70

Yotabyte (YB) 1 208 925 819 614 629 174 706 176 Bytes = 2^80

Xentabyte (XB) 1 237 940 039 285 380 274 899 124 224 Bytes = 2^90

Wektabyte (WB) 1 267 650 600 228 229 401 496 703 205 376 Bytes = 2^100

b) How many bytes are there in 5KB, 8MB, and 10GB. 

      1KB=1024 bytes

      5KB=5.120 bytes

      

      1MB= 1 048 576 bytes

      8MB= 8.388.608 bytes

      

      1GB=1 073 741 824 bytes

10GB= 10.737.418.240 bytes

c) Look at the order ASCII code uses to represent the first six letters of the alphabet.

                                            

A=0100 0001/65

B=0100 0010/66

C=0100 0011/67

D=0100 0100/68

E=0100 0101/69

F=0100 0110/70

d) Convert the decimal number 27 into binay number.

    (27/2=13, remainder=1)

    (13/2=6,   remainder=1)

    (6/2=3,     remainder=0)           27= 1101

    (3/2=1,     remainder=1)

    

e) Convert the  binary number 11101 into a decimal number.

     

     1*2^4+1*2^3+1*2^2+0*2^1+1*2^0= 29

      (x^0=1)

    

f) Convert the decimal number 255 into binary number.

   (255/2=127, remainder=1)

   (127/2=63,   remainder=1)

   (63/2=31,     remainder=1)

   (31/2=15,     remainder=1)

   (15/2=7,       remainder=1)              255=1111111

   (7/2=3,         remainder=1)

   (3/2=1,         remainder=1)

   

g) Convert these units:  2^10KB= 1024KB=1MB.

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.