Subject: Computer Basics
We know that computer is an user dependent machine. It doesn't work or think on its own. All the activities of computer system are controlled and processed by the instructions and information provided by the user. These instruction are called commands. Collection of such instruction and the data in a systematic form to solve the problem is called the program.
To solve the problem using computer we have to make some systematic plan of action. Such plan of action can be represented in the systematic order using different tools and technique called the program presentation tools and technique. Popular tools and technique used to represent the programs are flowchart and algorithm.
Algorithm is defined as a set of rules that define how a particular problem can be solved in finite number of steps. In another word, algorithm is a step by step representation of instructions to solve the problem. An algorithm must be composed of a finite set of steps, each of which may require one or more operations.
The good algorithm should have following features:
An algorithm is a sequence of steps required to solve a particular problem. The concept of algorithm was given by ALKHOWARISMI.
Step 1 : Start
Step 2 : Read radius and store to R
Step 3 : Assign value of pie to P
Step 4 : Find area and circumference
Step 5 : Display area and circumference
Step 6 : Stop
Step 1 : Start
Step 2 : Read A, B
Step 3 : Assign A to X and B to Y
Step 4 : Divide A by B.
Step 5 : Is remainder zero? If yes, go to step 7.
Step 6 : Assign A to B and B to remainder. And go to step 4
Step 7 : Assign B to HCF
Step 8 : Multiply X and Y and divide by HCF. And assign result to LCM.
Step 9 : Display HCF and LCM
Step 10 : Stop
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