SS2 Third Term Computer Studies Lesson Note – Algorithms and Flow Chart

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WEEK: 4                                                                  

TOPIC: ALGORITHMS AND FLOW CHART

CONTENT: ­ (a) Definition of: (i) Algorithm (ii) Flowchart (b) Functions of algorithm (c) Characteristics of algorithm

Sub-Topic 1: Definition of Algorithm

Algorithm can be defined as sequence of steps that defines how a particular problem can be solved in a finite and ordered manner. It is a set of rules and sequential steps. To make the computer do anything one has to write a computer program, and such programs has to be in a step by step manner, the computer then executes the program, following each step mechanically to accomplish the end goal.

Algorithm can also be defined as a specific set of instructions for carrying out a procedure or solving a problem. They are usually written in English and some few mathematical notations.

Functions of Algorithm:

1. It helps the programmer to know all the steps required for writing a program without skipping any.
2. It improves program development skills of a programmer.
3. It shows the order of sequence of steps in a program
4. It helps programmer to know each step required for a program

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