digital clock with timer 555 - and gate - IC 7447 - IC 7490 - 7 segment - breadboard

1. Digital Clock

2. Content...
1)Breadboard
2)Resistors and Capacitor
3) Logic Gates (SN7408)
4) 555 timer
5) Decade and binary counters (7490)
6) BCD to 7-segement decoders/drivers (7447)
7) 7 segment LED display

3. BREADBOARD
A breadboard also known as protoboard is a type of solderless
electronic circuit building.You can build a electronic circuit on a
breadboard without any soldering ! Best of all it is reusable. It was
designed by Ronald J Portugal of EI Instruments Inc. in 1971.
Building or prototyping circuits on a breadboard is also known as
'breadboarding '.In this instructable I will guide you how to use a
modern breadboard to make simple circuits.

4. Resistors…

5. Types of Resistors
FIXED RESISTORS:
1) Carbon Composition Resistor
2) Precesion wire wound
3) NIST Standards
4) Power wire wound resistor
5) Fuse resistors
6) Carbon film resistors
7) Metal Film resistors
8) Foil Resistors
9) Filament resistors
10) Power Film resistors
VARIABLE RESISTORS
1) Rheostat
2) Potentiometer
3) Preset

6. TYPES OF CAPACITOR
1) Electrolytic capacitor
2) Non- Electrolytic capacitor
3) Variable Capacitance (varicap)
Other types capacitor
 Ceramic Capacitor
 Mica Capacitor
 Mylar Capacitor
 Dielectric Capacitor
 Film Capacitor
 Radial Lead type capacitor
 Axial Lead type capacitor
 Tantalum Electrolytic Capacitor

7. GATES
Any binary operation (addition, multiplication etc) can be implemented
using logic gates.
Basic Gates
AND
OR
NOT
Derived Gates
NAND
NOR
X-OR

8. AND Gate SN7408

12. 555 Timer IC

13. PIN CONFIGURATION

15. Decade and Binary Counters (7490)

20. BCD to 7-Segment Decoders/Drivers (7447)
IC 7447 Pin Configuration

24. 7 segment LED display

28. THANK
YOU…!!!