Algorithms and Flowcharts : Summary

1. An algorithm is a description of how to carry out a process. An algorithm lists the steps that must be followed to complete the process.
 
2. When a computer carries out an algorithm the computer is said to execute or run the algorithm. Algorithms are entered into a computer using a programming language.
 
3. A flowchart consists of a sequence of instructions linked together by arrows to show the order in which the instructions must be carried out.
 
4. 

These symbols are used to produce flowcharts :

 
5. A system flowchart shows in general terms the operations that will be performed on information in an information system. The arrows on a system flowchart show the direction that data will flow in around the system.
 
6. 

These symbols are used to produce system flowcharts :

 

(C) P Meakin 2004