Showing posts with label Different. Show all posts
Showing posts with label Different. Show all posts

Difference Between TFT and LCD

This is a common question when have been asked about several times by many people. Every body wants to know that what is the difference between a LCD and TFT. So i figured out, i should answer this question for anyone who has doubts.

LCD stands for Liquid Crystal Display... and 
TFT stands for Thin Film Transistor.

TFT is not really different from LCD. It comes from the family of LCD technology. We can say that it is a modern version of the LCD Technology. A TFT provide a well improved image quality. 
There are two typs of display quality. 1st one is Matty and 2nd is Grossy. Matty display is called LCD and Grossy display is called as TFT. LCD and TFT consumes less power energy as compared to CRT (Cathode ray tube).
Now a days TFT has been used for mobile phone devices, projectors, nevigation systems as well as TVs and computer monitors.

Data and Information

What is Data ?

Distinct pieces of information,usually formatted in a special way. Data can exist in a variety of forms-as numbers or text on pieces of paper,as bits and bytes stored in electronic memory, or as facts stored in a person's mind.
       Strictly speaking ,data is the plural of dadaum ,a single piece of information .In practice ,however ,people use data as both the singular and plural form of the world.
      
 Finally ,we can also say ,data is a set of related facets which can be numbers,lattes of alphabet ,words or ,special symbols.But individually they have no meaning.
Example-Such studies are weight of any thing,name of a person,the office address,the price of any material,percentage of interest,the speed of a vehicle etc.

What is Information?

The meaningful context of data is the information.It is obtained through processing of data. When we analysis data that is meaningful and understandable to computer is call information.
 The nature of information directly linked with data processing.Again various type of information can be produced form the same data for different works. Further ,a number of special data be necessary for special type of information .the relation between data ,processing and information is shown below .


Data processing
Data Processing


Example -In order to obtain the age of student we usually subtract his birth data form present date.Here in the case the birth date is the data ,the subtraction is the processing and the age is the information.



Different between primary memory and Secondary memory

Different between primary memory and Secondary memory

Primary memory :

RAM
RAM(Main Memory)
  1. Primary memory  is integrated circuit (IC) based.
  2. Primary memory is extremely efficient and fast.
  3. Primary memory is volatile.
  4. Data is stored temporarily.
  5. Primary memory is used by computer itself.
  6. Primary memory is dependent on power supply.
  7. Primary memory is extremely costly.
  8. Here the data storage capacity is much less.
  9. Example of Primary memory - RAM,ROM

Secondary memory:

  1. Secondary memory is  magnetic paper or optical media based.
    Hard disk
    Hard disk

  2. Secondary memory is competitively slow.
  3. Secondary memory is non-volatile.
  4.  Data is stored permanently.
  5. Secondary memory is used by the users.
  6. Secondary memory is not dependent on power supply.
  7. Secondary memory parts are less costly.
  8.  Data storage capacity is extremely high.
  9. Example of Primary memory - Hard disk,Floppy disk.

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