Slides in this set
Data are raw elements that on their own have no meaning. So for example, A(letters) 4(numbers)
Information is data that has been transformed to give meaning such as 4hours (a time) 24g (a weight.)
Knowledge is a set of rules that are applied to information that gives meaning and context which leads to
decision making. For example; 4 hours to drive to Birmingham with this knowledge we know what time
we will have to leave if we need to be there at a specific time.
R Such as
DATA INFORMATION KNOWLEDGE
Raw and meaningless Meaning
Data is processed into information where we
apply knowledge to gain a full meaning.…read more
INPUT, OUTPUT AND PROCESS
Interactive whiteboard pen
INPUT Graphics tablet STORAGE
At any stage in the
cycle the user can
Printer store data
An example of a process is text which is data
entered via a keyboard.
An example of a code is the ASCII code used by a Feedback is what may need to be
computer it uses digitizing. It digitizes the key
PROCESS into a form which the computer understands. All
changed after output or
knowledge in order to improve
data is converted so that a common language is the cycle.
understood by the computer. Data can then be
processed into information.…read more
Data comes in different types a quick identifier is a Other data types include:
file extension. For example if I had a word Alphanumeric data type: includes words and
document and I saved the word document Data, numbers
Information and Knowledge once saved it would Numeric data type: is just numbers
appear as datainformationandknowledge.doc Integer data type: is a whole number with no
Text- xxx.doc fraction or decimals
Images- xxx.jpg/jpeg/giff/bmp/tiff Boo lean: A value with two instances such as yes or
Sound- xxx.mp3/wma/acc/wav no, on or off.
Web-based- xxx.html Movie file types.
Other examples include
xxx.txt- this is a standard text document with no
particular font or colours or pictures.
xxx.jpg are used for websites as it doesn't slow the
computer down compared with bmp files.
xxx.tiff files are scanned files
xxx.ppt- is a PowerPoint document
xxx.eml- is a Microsoft outlook e-mail
xxx.smi- is a realplayer file.…read more
is getting information together for the computer to process.
Indirect data capture: Direct data capture:
Indirect methods of data capture involve Because of human errors in the handling of
preparing data into a form which the data, methods have been developed so that
machine can read before feeding the data the computer can read the information
into the computer. Paper tape or punched directly without needing any keying in. This
cards can be used as input mediums. First means there are no typing errors. These
they have to be punched and verified. These methods are also better because input is a lot
methods involve a lot of extra work and lots quicker
of errors can be introduced. Because of this,
this method is not used as much as it used to
be in the past.…read more