3-1S Learning Presentation for PT's.pptx

HIGH 5
San Policarpo National High School
Prayer
AVP

MECHANICS
• You need to “read” two pictures to form a word.
Example:
Answer: Earrings

OBJECTIVES
1. Identify the ANSI Standard flowchart
symbols.
2. Draw a flowchart using ANSI Standard
symbols.
3. Appreciate the importance of using ANSI
Standard flowchart symbols.

N NQMNM,j7u ,shy wz7x ZX Zswa` nProgramming uses algorithm – an algorithm being a set of ordered steps for solving a
problem, and essentially a synonyms of logic. Analytical and critical thinking is needed in the formulation of solution to a
problem.
zn znj;sw8onn
PROGRAMMING
the art and science of creating programs.
 program is a list of organized instructions
that the computer must follow in order to
follow in order to process data into
information.

Coding
 an activity that involves typing words and
numbers in a computer.
Programming uses algorithm – an algorithm
being a set of ordered steps for solving a
problem, and essentially a synonyms of logic.
Analytical and critical thinking is needed in the
formulation of solution to a problem.

What is a Flowcharts?
• A flowchart is a visual outline of an
algorithm in which the steps and
processes to be followed are
represented by symbols.
• There are actually two kinds of
flowcharts: the system flowcharts
and the program flowchart.

SYSTEM FLOWCHART
• is a diagrammatic representation
of the broad flow of work,
documents and operations.
• A system flowchart shows what
job is to be done.

PROGRAM FLOWCHART
• is a diagrammatic representation
of a solution to a given problem for
which the program is written.
• A program flowchart shows how
the job is to be done.

History of Flowcharts
• The first structured method for documenting process
flow, the "flow process chart", was introduced by
Frank and Lillian Gilbreth in the presentation
"Process Charts: First Steps in Finding the One Best
Way to do Work", to members of the American
Society of Mechanical Engineers (ASME) in 1921.

• In the early 1930s, an industrial engineer,
Allan H. Mogensen began to train
business people in the use of some of the
tools of industrial engineering at his Work
Simplification Conferences in Lake
Placid, New York.

• Art Spinanger, a 1944 graduate of
Mogensen's class, took the tools back to
Procter and Gamble where he developed
their Deliberate Methods Change
Program.

• Ben S. Graham, another 1944 graduate,
Director of Formcraft Engineering at
Standard Register Industrial, applied the
flow process chart to information
processing with his development of the
multi-flow process chart, to present
multiple documents and their
relationships.

• In 1947, ASME adopted a symbol set
derived from Gilbreth's original work as
the "ASME Standard: Operation and
Flow Process Charts."

• Douglas Hartree in 1949 explained that
Herman Goldstine and John von
Neumann had developed a flowchart
(originally, diagram) to plan computer
programs.

• The original programming flowcharts of
Goldstine and von Neumann can be
found in their unpublished report,
"Planning and coding of problems for an
electronic computing instrument, Part II,
Volume 1" (1947), which is reproduced in
von Neumann's collected works.

• The flowchart became a popular tool for
describing computer algorithms, but its
popularity decreased in the 1970s, when
interactive computer terminals and third-
generation programming languages
became common tools for computer
programming,

• The flowchart became a popular tool for
describing computer algorithms, but its
popularity decreased in the 1970s, when
interactive computer terminals and third-
generation programming languages became
common tools for computer programming.

FIGURE 1.1 A PAYROLL PROGRAM ALGORITHM WITH ITS
PSEUDOCODE

Figure 1.2 A program
flowchart for the problem
in Fig. 1.2

Table 1.1 ANSI Standard Flowchart
Symbols

Table 1.2 The ANSI/ISO standards include
symbols beyond the basic shapes.

GENERAL RULES FOR
FLOWCHARTING
1. All boxes of the flowchart are connected with
Arrows. (Not lines)
2. Flowchart symbols have an entry point on the top
of the symbol with no other entry points. The exit
point for all flowchart symbols is on the bottom
except for the Decision symbol.
3. The Decision symbol has two exit points; these
can be on the sides or the bottom and one side.

GENERAL RULES FOR
FLOWCHARTING
4. Generally a flowchart will flow from top to
bottom. However, an upward flow can be shown
as long as it does not exceed 3 symbols.
5. Connectors are used to connect breaks in the
flowchart. Examples are:
o From one page to another page.
o From the bottom of the page to the top of the same
page.
oAn upward flow of more then 3 symbols

GENERAL RULES FOR
FLOWCHARTING
7. Subroutines and Interrupt programs have their
own and independent flowcharts.
8. All flow charts start with a Terminal or Predefined
Process (for interrupt programs or subroutines)
symbol.
9. All flowcharts end with a terminal or a
contentious loop.

Advantages of
Flowchart:
●Flowcharts are better way of communicating the
logic of system.
●Flowcharts act as a guide for blueprint during
program designed.
●Flowcharts helps in debugging process.
●With the help of flowcharts programs can be easily
analyzed.
●It provides better documentation.
●Flowcharts serve as a good proper documentation.

Disadvantages of
Flowchart:
●It is difficult to draw flowchart for large and
complex programs.
●In this their is no standard to determine the
amount of detail.
●Difficult to reproduce the flowcharts.
●It is very difficult to modify the Flowchart.

Example of flowchart and coding in
different programming languages:

Flowchart
Example –
Medical
Service

Flowchart
Example –
Calculate
Profit and
Loss

INSTRUCTIONS: Draw the correct flowchart
symbol of the following statements.
_______________ 1. X = X + 3
_______________ 2. Is X = X + 3 ?
_______________ 3. Is Q >= 6 + J ?
_______________ 4. Input Stud, QuizGr, RecGr,
Exam
_______________ 5. print Stud, FinalGr
ACTIVITY 1

INSTRUCTIONS: Draw the correct flowchart
symbol of the following statements.
_______________ 6. Is EmpNm = “EOF”?
_______________ 7. Sal = 10000 + 1.25 * (OT * Rate)
_______________ 8. Is W = 2 * (Z – 2) ?
_______________ 9. total = total + N
_______________ 10. Cost = 800
ACTIVITY 1

ACTIVITY 2
Instruction: Draw a flowchart of the following problems.

3-1S Learning Presentation for PT's.pptx

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3-1S Learning Presentation for PT's.pptx