UNIT 2: HARDWARE

UNIT 2: HARDWARE AND ITS COMPONETS. 

 In this unit you will find out the answer to the questions:
- How do you use a computer to find, process, organise, presen and sotre 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.
LINK : ICT_1

1.1. 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.

 ACTIVITY Nº1.
a) Make a summary in your blog about this concept.
Explain how it works using a drawing (input/process/output).

1.2. 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.

1.3. COMPUTER COMPONETS: HARWARE.

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

(LINK YOUTUBE: "Disecting PC")

• 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