DSY1501
ASSIGNMENT 1 2025
UNIQUE NO.
DUE DATE: 2025
, Assessment 1: Introduction to Digital Concepts
Question 1: Digital Pulse and Wave Concepts
1.1
On a negative-logic pulse, the trailing edge is when the signal changes from a higher
voltage to a lower one — basically, when it drops. So, the correct answer is:
d) falling edge
1.2
To find the duty cycle of a square wave, we use the formula:
Duty Cycle (%) = (ON time / Total time) × 100
Here, ON time = 10ms, OFF time = 50ms, so total time = 10ms + 50ms = 60ms
Duty cycle = () × 100 = 16.66%
Answer: a) 16,66%
1.3
Frequency is calculated using this formula:
Frequency (f) = 1 / Total Time
Here, total time = Ton + Toff = 10ms + 20ms = 30ms
Convert milliseconds to seconds: 30ms = 0.03s
Frequency = .03 ≈ 33.33Hz
Answer: c) 33,33Hz
ASSIGNMENT 1 2025
UNIQUE NO.
DUE DATE: 2025
, Assessment 1: Introduction to Digital Concepts
Question 1: Digital Pulse and Wave Concepts
1.1
On a negative-logic pulse, the trailing edge is when the signal changes from a higher
voltage to a lower one — basically, when it drops. So, the correct answer is:
d) falling edge
1.2
To find the duty cycle of a square wave, we use the formula:
Duty Cycle (%) = (ON time / Total time) × 100
Here, ON time = 10ms, OFF time = 50ms, so total time = 10ms + 50ms = 60ms
Duty cycle = () × 100 = 16.66%
Answer: a) 16,66%
1.3
Frequency is calculated using this formula:
Frequency (f) = 1 / Total Time
Here, total time = Ton + Toff = 10ms + 20ms = 30ms
Convert milliseconds to seconds: 30ms = 0.03s
Frequency = .03 ≈ 33.33Hz
Answer: c) 33,33Hz
