123Circuits.com
Free Electronics Circuits

Electronics Circuits for beginners

navleft
navright
lnavl
Circuits Links
lnavr
 

8051 Circuits

8052 Circuits

555 Timer Circuits

AC Circuits

Alarm Circuits

Amplifier Circuits

Bridge Circuits

Clock Circuits

Digital Circuits

Doorbell Circuits

Intercom Circuits

Laser Circuits

LCD Circuits

LieDetector Circuits

Mixer Circuits

MOSFET Circuits

Music Circuits

OpAmp Circuits

Photocell Circuits

Power FET Circuits

Power line Circuits

PowerSupplyCircuits

Relay Circuits

Scanner Circuits

Ultrasonic Circuits

Voltage Convertors

Voltage Regulators

Voltage Multipliers

spacer

7 segment LED Counter Circuit

Parts Required to make this 7 Segment LED Counter

680 Ohms 7 resistances

CA Seven Segment LED Display. CA=Common Anode

commonanode

7490IC  & 744HIC as shown in the above figure

Useful Link:

Cosy Communications

spacer
Wu Yi Tea

© Copyright 2008, 123circuits. All Rights Reserved.

 
Wordpress Themes