The presentation introduces digital clocks, including their history, components, implementation, uses, and future plans. It discusses how the first digital watches were invented in the 1880s and the first digital alarm clock was patented in 1956. The presentation implements a digital clock circuit in Multisim using ICs like 74LS47, 74LS90, 74HC32, and other components like function generators, push buttons, and 7-segment displays. Digital clocks are now commonly used in devices like cars, radios, TVs, and computers to display time accurately and easily readably compared to analog clocks. Future plans include adding time setting, on/off, date, and alarm functions.

1. Welcome to the Presentation
Course : Digital Logic Design
American International
University-Bangladesh

2. Presented by:
1
2
Name: Noman,Asif-Al
Name: Dipa,Shamima Sultana
3
4
Name: Md.Waliel Raad Dihan
Name: MD. Wasim

4. Contents
 Introduction.
- About Digital Clock.
- History of Digital Clock.
 Equipments.
 Implementation In Multisim.
 Uses Of Digital Clock.
 Conclusion.
- Advantage of Digital Clock.
- Future plan.

5. INTRODUCTION OF
DIGITAL CLOCK

6. About Digital Clock
 What Is Digital Clock?
- A digital clock is a type
of clock that displays
time digitally.

7. History Of Digital Clock
 The first digital pocket watch was the invention of Austrian
engineer Josef Pallweber who created his "jump-hour"
mechanism in 1883.
 The earliest patent for a digital alarm clock was registered by
D.E Protzmann and others on October 23, 1956, in the United
States.
 The Hamilton Watch Company introduced the first digital
wristwatch that included an LED display in 1970.

8. EQUIPMENTS OF
DIGITAL CLOCK

9. Used Equipments
 74LS47 IC
 74LS90 IC
 74HC32 IC
 Function Generator
 Push Button DPST
 7 Segment Display

10. Description
>> 74LS47 IC

11. Continued…
>> 74LS90 IC

12. Continued…
>> 74HC32 >> Function Generator

13. Continued…
>> DPST >> 7 Segment Display

14. IMPLEMENTATION IN
MULTISIM

15. Implementation

16. USES OF DIGITAL CLOCK IN
REAL LIFE

17. Uses Of Digital Clock
Digital Clocks are used in different
kinds of devices such as cars,
radios, televisions, microwave
ovens, standard ovens, computers
and cell phones.

18. CONCLUSION OF DIGITAL
CLOCK

19. Advantage of Digital Clock
 Less expensive.
 Easy to understand time concept.
 Give time more accurately than analog clock.
 Easier to read time.

20. Future Plan
 Set Time setting , off and on
system.
 Set Date system.
 Set Alarm system.

21. Any Question Please??