Sunday, August 24, 2014

conclusion

very sorry guys, this will be the last one  :((((
what i've learned, it's definitely hard to say.
comp sci taught me a lot of things in the first quarter, all about techniques that can help me with the computer. encryption, versioning,backup, all will be useful. eventually, these will help me get better use of my computer. and i can say, when the time comes, application of these things will come in handy. thank you!!!!

versioning

games like "minecraft" have versions like mincraft ver.7.5 etc. this is a technique used by the creators to make their products better.  this is called "versioning".
 more like this:

source:dmytroduk.com

versioning is a particular form of something differing in certain respects from an earlier form or other forms of the same type of thing. moreover, this is like evolving your own work like "blog ver1"into "blog ver 2".

backup

files are sometimes easy to be taken care of, but hard when you want them back when lost. one situation, is when your computer has crashed and you have important files stored inside it and you can't retrieve it. very frustrating right. as a precaution, many experts use USB's to store the same files as their backup.

source:nextgendigitalhome.com

this is a wise way of using your USB. if your first files are missing or accidentally deleted, you don't have to worry because you have the backup.

encryption

sometimes, in SNS's, we put passwords into our accounts,  like facebook or twitter. surely this prevents anyone from stealing your account. this technique also applies to your computer's files known as encryption.
encrypting is very important for those who have files that are for them only. this is a way to achieve data security. for example, the word password is turned into"d@55w0rp". protecting your accounts and data will be easy and safe using encryption.
   
source: dogtownmedia.com                                                       



efficient file management



you really do not want a dirty room, right? then, you really do not want an unorganized file in the computer.
like this:





source: kelatlifepoint.wordpress.com


that is why management of files is important.

in order to store files efficiently, the use of folders is put into action. basically, folders are just file containers. that way finding a single file will be very easy and you don't have to search through piles of lost files scattered around.

text-based VS GUI-based navigation

Surely, we are used to the normal mouse-click in the screen AKA GUI based navigation. but, we also have to learn the hard way, text-based navigation.
Command Prompt.png
source: http://en.wikipedia.org/wiki/Windows_command_prompt
in text-based, you just open a program in your computer and type in a few commands.these are some of them:

  • DIR- directory, views all files in folders and subdirectories
  • RD- renames directory
  • MD- makes directory
  • CD- displays the directory
  • CLS- clears the screen

Saturday, August 23, 2014

data compression

ever wondered making one big file into a small one? hard right? not anymore! comp sci taught us data compression. basically, compressing one big data into a smaller version
sorce: justone.co.nz

strengths and limitations

since the computer was made by the hands of man, it surely does have strengths and limitations.
the computer offers fast computations and searching. just one click of a button and you are there. access to the internet won't be a problem. commuting information is as easy as pi. operations can be done in milliseconds faster than the human brain. like the supercomputer"watson". 




source:youtube.com/watch?v=qOpW5VN2j2Q
however, computers have access to more. people tasked with these privileges have misused it,using it for bad things such as the famous cyber-bullying. using a computer takes responsibility. so it's up to you to use the computer in good or bad.

define IT & ICT and the computer

another significant lesson in comp sci is IT and ICT
IT is information technology for short and is the application of computer use while ICT is for information and communication technology that communicates data through telecommunications. also we were taught of the concept of the computer which is a device that carries out commands from the software. today, it is now called computer because before, you literally can't mention for several times in a conversation "general purpose stored-program electronic digital computer"which is the meaning for computer because that would
be crazy.anyway, today, there are many examples of ICT and IT such as cellphones etc.
source: en.wikipedia.org/wiki/personal computer

Importance

Of course, what would be the use of having a subject without any significance? this is one of the basics of learning.
computer science is, as we all know, the branch of science that deals with the study of computers. yes, so in comp sci, we can be enabled to maximize our knowledge on computers, which is very awesome for 7th graders like us.