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renn caday

on 30 January 2013

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Transcript of Flowchart

refresher FLOWCHART a flowchart is.. a type of diagram that represents an algorithm or process, showing the steps as boxes of various kinds and their order by connecting them with arrows flowchart basic symbols l getting up in the morning this diagrammatic representation can give a step-by-step solution to a given problem. Branching and Control of Flow Symbols Process / Operation Symbols Input and Output Symbols File and Information Storage Symbols mistakes you would unintentionally make with flowcharts... 1. The use of appropriate symbols Every symbol has a meaning. Make sure that you are familiar with
them; the basic symbols are usually used though. 2. Excessive color schemes Your flowchart is designed to give a solution to a problem. The last thing you want to do is to have your message lost
in visual noise. 3. Symbol sizes should be consistent Ensure that the height and width are in proportion to each other and the rest of the symbols in the flowchart. 4. The need for consistent branch direction Ideally, TRUE conditions should flow out from the bottom while FALSE conditions should flow out from the right side. 5. Remember to scale It is better to have a flowchart span multiple pages than to be crammed into a small space, where all the details are unreadable. 6. Extended flowcharts If your flowchart is connected to another flowchart, then instead of putting it in just one page, connect it via a circular node to the flowchart on a different page. 7. Be descriptive It is good that you use a footnote, a call out or even a separate document to offer more detail for those process step descriptions that may need more detail. 8. Use a flowchart key One of the best practices of using flowcharts is to have a flowchart key describing the symbols that are used. 9. Battling inaccuracy When drawing flowcharts, remember that verifying the flowchart
steps is critical to avoid any inaccuracies. 10. Don't leave room for any uncertainty Planning ahead would mean that you avoid any unwanted mistakes. Flowchart of Finding the Average This flowchart answers the question "How do you draw a flowchart to calculate N factorial?" 1! = 1
2! = 1 * 2 = 2
3! = 1 * 2 * 3 = 6
N! = 1 * 2 * 3... * N N is an integer and is the input to the flowchart. This flowchart has a loop that starts with M = 1 and increments M until M equals the inputted value N. This program calculates N! by doing each multiplication. Loop Structures in Flowcharts LOOP a program structure that executes the same piece of code zero or more times. consists of a group of statements to be executed and a Boolean expression, called a condition. every time the computer executes the statements in the loop, the condition is evaluated. The computer continues to iterate as long as the condition evaluates to true. TYPES OF LOOP: while do while for while loop The condition is evaluated first and if it's true, the code within the block is executed. This repeats until the condition becomes false. do..while loop example: example: First, the code within the block is executed, and then the condition is evaluated. If the condition is true the code within the block is executed again. This loop is in contrast with the while loop. for loop For loops are typically used when the number of iterations is known before entering the loop. The loop body is executed "for" the given values of the loop variable. Flowchart of Factorial N Flowchart Exercises GROUP ACTIVITY:
Buy as Many Milk as You Can Go to the store with $195 and determine how many milk you can buy with your money. Display the quantity of milk and the remaining cash you have.
variables: C = Cash Available
M$ = Price of Milk
M = Quantity of Milk 1. Create a flowchart that determines the prime numbers smaller or equal to N. ASSIGNMENT: 2. Draw a flowchart that finds the minimum of three values a, b and c. http://creately.com/blog/diagrams/part-1-15-mistakes-you-would-unintentionally-make-with-flowcharts/
http://www.breezetree.com/article-excel-flowchart-shapes.htm REFERENCES:
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