ALL CLASS COMPUTER SCIENCE AND DATA PROCESSING NOTES

1- ……………………..is the change of information in any manner detectable by an observer.   A.     Information B.     Information processing C.     Technology D.    None of the above 2- ................................. is the assembly of written information into a standard order. A.     Information B.     Analysis C.     Organization D.    Collation   3- Which of the following is not the ways of organizing information? A.     Alphabetical by Name B.     Alphabetical by Title C.     Chronologically D.    Information 4- …………………… is the science of evaluating information content, and refining information to build portfolios. A.     Collation B.     Organization of information C.     Information Analysis D.    Technology 5- Which of the following can help in collecting data about environmental issues ? A.     Education B.     Agriculture C.     Special Needs D.    Environment   1-B 2-D   3-D   4-C 5-D

  SS1 INFORMATION PROCESSING AND TRANSMISSION  Information processing is the change of information in any manner detectable by an observer. As such, it is a process which describes everything which happens (changes) in the universe, from the falling of a rock (a change in position) to the printing of a text file from a digital computer system. Information represented digitally in two-state, or binary, form is often referred to as digital information. Modern information systems are characterized by extensive metamorphoses of analog and digital information. - Collation of information - Organization of information - Analysis of information - Interpretation of information Collation is the assembly of written information into a standard order. Advantages of sorted list include: One can easily find the first n elements and the last n elements One can easily search for an element, and conclude whether it is in the list. One can easily search for an elements in a given range. In

  Basic Arithmetic Any statement enclosed with double quotes (" ") in a cout statement is displayed directly and any arithmetical or logical expression is evaluated and then the result is displayed. The program below shows the result of the expression 3 + 5. /* PROG: C1_03sum.cpp */ #include <iostream> using namespace std; int main() { cout <<"5 + 3 = "<<5+3<<endl; //calculate and print the sum system("pause"); return 0; } 5 + 3 = 8 Press any key to continue . . .

  It is time to type our first C++ program. This program is going to prompt a line of text that says "Hello World!". This program has no input and no process but only output which says "Hello world!".  #include <iostream> using namespace std; int main() //the only function in this program. { cout <<"------------------------------- \n\n\n\n"; cout <<"Hello world! \n"; cout <<"********************************* \n"; cout <<"This is my C++ program."<<endl<<endl<<endl<<endl; system("pause"); return 0; }

  Understanding the Programming Programming is instructing a computer to perform a task for you with the help of a programming language. The instructing part requires a step by step solution to the task. This step by step solution is called an algorithm after the name of AlKharizmi. People who make computer programs are called programmers. There are usually two difficulties for computer programmers; Finding a feasible algorithm (algorithm design) and writing the program (implementation). People who use the programs are called end-users. A computer program (software) contains a sequence of instructions for a computer. One program is usually composed of three parts: l Input part gets the data from an input device. Our programs, in the book, will get the data from keyboard or from a text file. l Process part is the hardest working part of the program. It carries out the algorithm and finds out the desired result. l Output part gives the result of the program. Our programs will display the