In Flowchart, Parallelogram is used to show ?
A. General Input Symbol
B. Operation on Data
C. Online use of Keyboard
D. Output Data Screen
Correct Answer :
A). General Input Symbol
Flowchart Symbol Cheat Sheet
Symbol |
Shape |
Purpose |
Input/Output |
▰▰ Parallelogram |
Data entry or display (e.g., INPUT age, PRINT |
Process |
▭ Rectangle |
Calculations or data manipulation |
Decision |
◊ Diamond |
Conditional branching (Yes/No paths) |
Start/End |
◯ Oval |
Beginning or termination point |
Flow Line |
|
Direction of process flow |
Real World Examples of
Parallelogram Usage
- User
Interaction
Diagram
The parallelogram captures both input (restock amount)
and output (report).
- File
Operations
Diagram
Common Misconceptions
- Myth: “Parallelograms
represent decisions.”
Reality: Decisions use ◊ diamonds (e.g., “Is age >=
18?”). - Myth: “All
data operations use rectangles.”
Reality: Rectangles are for processing (e.g., total
= price * quantity), not I/O.
Why This Distinction
Matters
- Clarity
in Design
Parallelograms instantly signal data exchange points in complex workflows. - Programming
Translation
Directly maps to code commands:
python
# Input Parallelogram → input()
name = input(“Enter your name: “)
# Output Parallelogram → print()
print(f”Hello, {name}!”)
- Universal
Standard
Recognized in ISO 5807 and ANSI flowchart standards worldwide.
Pro Tips for Flowchart Design
- Label
precisely: Use verbs like “Scan barcode” or “Display
error” inside parallelograms. - Combine
with other symbols:
Diagram
- Avoid
ambiguity: Never use parallelograms for calculations (e.g., count
= count + 1 belongs in a ▭ rectangle).
Practice MCQ
What does this flowchart segment represent?
Diagram
Flowchart Symbol Cheat Sheet
Symbol |
Shape |
Purpose |
Input/Output |
▰▰ |
Data entry or display |
Process |
▭ |
Calculations or data |
Decision |
◊ Diamond |
Conditional branching |
Start/End |
◯ Oval |
Beginning or termination |
Flow Line |
|
Direction of process flow |
Real World Examples of Parallelogram Usage
- User Interaction
Diagram
Code
The parallelogram captures
both input (restock amount) and output (report).
- File Operations
Diagram
Code
Common Misconceptions
- Myth: “Parallelograms
represent decisions.”
Reality: Decisions use ◊ diamonds (e.g., “Is age >=
18?”). - Myth: “All
data operations use rectangles.”
Reality: Rectangles are for processing (e.g., total
= price * quantity), not I/O.
Why This Distinction Matters
- Clarity in Design
Parallelograms instantly signal data exchange points in complex workflows. - Programming Translation
Directly maps to code commands:
python
# Input Parallelogram →
input()
name = input(“Enter your
name: “)
# Output Parallelogram →
print()
print(f”Hello, {name}!”)
- Universal Standard
Recognized in ISO 5807 and ANSI flowchart standards worldwide.
Pro Tips for Flowchart Design
- Label precisely: Use verbs like “Scan barcode” or “Display
error” inside parallelograms. - Combine with other symbols:
Diagram
Code
- Avoid ambiguity: Never use parallelograms for calculations (e.g., count = count
+ 1 belongs in a ▭ rectangle).
Practice MCQ
What does this flowchart
segment represent?
Diagram
Code
a) Decision making
b) Loop initialization
c) Input operation (Correct)
d) Data storage
Key Takeaway: The parallelogram is your visual anchor
for all data exchanges in flowcharts. Mastering this symbol
ensures accurate documentation of user interactions, system communications, and
reporting functions – critical for both exams and real world system design.
a) Decision making
b) Loop initialization
c) Input operation (Correct)
d) Data storage
Key Takeaway: The parallelogram is your visual
anchor for all data exchanges in flowcharts. Mastering this
symbol ensures accurate documentation of user interactions, system
communications, and reporting functions – critical for both exams and real world
system design.