Sakera News: June 2014

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Monday, 23 June 2014

Pseudocode

This last notation is pseudocode notation friend. Pseudocode own notation notation notation resembles high level programming language, especially language Pascal and C. Ok, once, for example ya pal. Here I give an example of pseudocode notation to calculate the area and circumference of a circle

     Algooritma Hitung_Luas_dan _Keliling_Lingkaran
     {Entered value of the radius of the circle (r). Calculate and print a broad and circumference of a circle with the formula L = pi * r * r and K = 2 * pi * r
     DECLARATION:
       const phi = 3.14
       r, L, K = real
     DESCRIPTION:
       read (r)
       L pi * r * r
       K 2 * pi * r
       write ('Area of circle =', L)
       write ('Roving Circles =', K)

User Information Commands

Once we know peintah format, then the next one should know also commands for the user. Ok just listened to friends.
Commands for user information such as:2.3.1 en2.3.2 hostname2.3.3 uname2.3.4 w2.3.5 WHO2.3.6 who am i2.3.7 chfn2.3.8 finger
2.3.1 enPs command is used to display the user name along with the number of users and group identity and group identity number. Example:# Id

Command Format

Friends, below is a discussion of the format of the command that is included in the basic commands LINUX operating system. Ok, we see a direct friend-format format like.
Complete formatting commands in LINUX Operating Systems shaped:nama_perintah [options] [args ...]Description:• Brackets elbow state that is in it is optional. Could exist, could not exist.• Signs point three times (...) states that the components in front of this sign can be repeated several times.• nama_perintah can be built-in commands or programs (utilities, shell scripts and applications). Stating that the command will be executed by the shell.• options (option) to change or add to the default action of the command.• argument stating the object to be processed by the command. This section is generally in the form of files. But it can also contain data that will be processed.For example, the command has the following format:

Understanding Kernel, Shell, Utilities, Applications

Kernel, Shell, Utilities, and Applications we have put in the previous post companions tap in the post I do not give a sense of each of these terms. Well, in this post I will discuss about the definition of each of these terms. Ok friend immediately check on the scene.
The kernel is the core of the UNIX system, which controls the hardware and form a variety of functions beraras low. The functions performed by the kernel:• Services system date and time• File management and security management• Services input and output operations• Management and scheduling process• Memory Management• To conduct the accounting system• Perform error handling and interrupt

Description Descriptive

With the notation style description description of each step is explained with clear language. The process begins with a verb such as 'read' or 'read', 'count' or 'count', 'for' or 'divides', 'change' or 'replace', and so on. While conditional expressed by 'if ... then ...'

     Algorithms Calculate Area and Circumference Circle
     DESCRIPTION
     Enter the circle radius (r)
     Calculate the area of a circle with the formula L = π * r2
     Calculate the circumference of a circle with the formula K = 2 * π * r
     Show area of a circle
     Show circumference of a circle

Program to calculate the area and circumference of a circle using C + +

Friend, after we know about concepts and notation algorithm, so it's good we immediately try it on your PC or Laptop our respective companions.The steps are as follows:

    1. Prepare your PC or Laptop friend
    2. Water, thirsty companions fear ... (hehe)
    3. Open application programming friend, here I am using Turbo C + +
    4. Re-type or copy and paste the code below into a worksheet friend

Introduction to concepts and notation algorithm

Bismillah ...
The above sentence into sentences novice to start my post this time companions. Ok, this time I will discuss about the concept and algorithm notation.
The algorithm itself has meaning or definition of "Step-by-step logical and systematic being done to solve a problem".
With the above definition, the algorithm also has the stages in the making of the program, namely:
First: Defining
Second: the description of the problem
Third: The design problem solving steps
Last: Coding program

But apart from that friend, algorithm also has several notations, namely:
1. Notation Description Description
2. Notation or flowchart Flowchart
3. Pseudocode Notation

Management Operating System

Understanding the operating system just discussed, we'll talk about the Operating System Management. Management sistemoperasi on UNIX closely related between software and hardware.
Critical components in the operating system UNIX / LINUX include:

      kernel
      shell
      utilities
      application

And to know the understanding of each of the above terms I will discuss in a different page because understanding friend rather long ... (hehe)

Nature and privilege Operating System

Once we know the definition of the operating system now we Cont introduction to the nature and system privileges operasi.Ok friend, there are some properties and features of the operating system are derived and adopted from the UNIX operating system.Nature and privilege operating system, namely:

    Portability
    MultiUser
    Multitasking
    A hierarchical file system
    Utilities
    Shell UNIX / LINUX (Other)
Companions, in addition to the terms above we know that is the nature and privileges of the operating system, we are also required to know the understanding of each of these terms. To know the sense of each term directly to the scene that we friend.

Definition of Operating System

Ok guys, I will discuss about the definition of Operating System. For those who have a PC or laptop operating systems are required to know about ... (hehe).
Operating system is a computer software that regulates and controls the basic operation of a computer system.
Int jam, the task of the operating system itself is:

Perform file system management functions
Controlling a variety of sources on the system, such as printers and disk
Forming scheduling processes within the system
Set the number of concurrent users that the system

Monday, 23 June 2014

Friday, 20 June 2014