Instructions | Digital Stopwatch using 4026 + 555 + 7 Segment

1

Make a Connection ON Breadboard

first make tight and proper connection as per circuit Diagram.For check the working Of 4026 ic i make a monostable counter for testing.
2

Astable 7 segement counter

cascade connection of 4x 4026 with 4 x 7 segment display
3

Cut the Project Box

using Female Header as Holder of 7 segment display
4

cut the PCB Board
5

Make a space for Battery

back side

Front Side
6

Solder the PCB as per circuit Diagram
7

assemble the circuit board in Box

add reset , stop and on/off switch

reset pin 15

stop pin 2
8

Final

it Look Like This
9

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Digital Stopwatch using 4026 + 555 + 7 Segment