Electronic data processing cycle and Flowcharting

1. COMPUTERS IN
OUR DAILY
LIFE
Created by: Norwin C. Adriatico

2. At the end of the topic, students will be able to:
1. Understand the data processing principle;
2. identify the elements of a computer system;
3. define algorithm;
4. learn the guidelines for drawing and creating a
flowchart.
Objectives

3. - It refers to the utilization of computer or infor-
mation and communications technology (ICT)
equipment in the processing, operation and ma-
nipulation of data.
ELECTRONIC DATA PROCESSING

4. ELECTRONIC DATA PROCESSING
Data vs Information
Data
- refer to raw materials like letters, numbers,
sounds, images.
Information
- refers to processed data which undergone
operations and can serve as input to other
subsequent operations.

5. ELECTRONIC DATA PROCESSING

6. ELECTRONIC DATA PROCESSING
Data Processing Cycle
e a
d
c
b
a. Origination
- The initial capture
of raw data as
transactions occurs.
- Involves collection,
gathering and
identifying data.

7. ELECTRONIC DATA PROCESSING
Data Processing Cycle
e a
d
c
b
b. Input
- Data are collected
and converted into
a form acceptable
for processing.
- Involves classifying,
summarizing,
sorting and coding.

8. ELECTRONIC DATA PROCESSING
Data Processing Cycle
e a
d
c
b
c. Processing
- refers to the
electronic
manipulation of
data.
- logical and
mathematical
operations are
executed

9. ELECTRONIC DATA PROCESSING
Data Processing Cycle
e a
d
c
b
d. Output
- This stage refers to
the display of
results from the
process stage.

10. ELECTRONIC DATA PROCESSING
Data Processing Cycle
e a
d
c
b
e. Storage and
Feedback
- This stage involves
retention of the
results of
processed data for
future use or
retrieval.

11. FLOWCHARTING
Flowchart
- Is a graphical representation of an algorithm;
- it is used to test the validity of the statements
entered in the program;
- it is used to determine if the sequence of
instructions is correct.
- It has 3 basic structures: sequencial, conditional,
and repetition program structure.

12. Flowcharting
Example in words: Add two numbers
Example flowchart:

13. FLOWCHARTING SYMBOLS
Terminal Symbol – It represents
the beginning and end of a
program or point of interruption
in a program.
Preparation Symbol – It
indicates the initialization of
certain variables to given
values, usually 0 for numeric or
null for string values.

14. FLOWCHARTING SYMBOLS
Input/output Symbol – It
represents an activity to an
input or an output device.
Process Symbol – It represents
an instruction that involves
arithmetic calculations or
assigning a value into a
variable.

15. FLOWCHARTING SYMBOLS
Decision Symbol – It signifies a
decision usually expressed in
an If---Then statement.
On-Page Connector Symbol - It
is used to designate an entry
from or an exit to another part
of the flowchart on the same
page.

16. FLOWCHARTING SYMBOLS
Off-Page Connector Symbol –
Shows an exit to or an entry to
another part of the flowchart
page.
Flowlines – Used to show the
direction of flow of data and the
sequence of instruction in a
program.

17. - Living in the Information Technology Era, Ronina R.
Caoili - Tavuan and Mia V. Eleazar.
- Basic Computer Concepts and Applications with Fundamentals
of Programming, James Patrick A. Acang et.al.
- Britanica.com
References