Posted by Circuits Arena on Saturday, 20 December 2014
Simple 0 to 9 Display Circuit Using 7 Segment Display by IC 7446 is the artlcle explaining Simple 0 to 9 Display Circuit Using 7 Segment Display: The circuit shows simple 0 to 9 display that can be employed in a lot of applica...
Simple 0 to 9 Display Circuit Using 7 Segment Display:
The circuit shows
simple 0 to 9 display that can be
employed in a lot of applications. This circuit is based on 7 segment display asynchronous
decade counter 7490(IC2), and a seven segment
decoder/driver IC 7446 (IC1).
Circuit Diagram :
Circuit Diagram of 7 Segment Display.
- Seven segment display consists of 7 LEDs labelled ‘a’ through ‘g’. By
forward biasing different LEDs, we can display the digits 0 through 9.
Seven segment displays are of two types, common cathode and common
anode.
- All the seven LEDs are tied together, while in common cathode type all
cathodes are tied together. The seven segment display used here is a
common anode type .Resistor R1 to R7 are current limiting resistors. IC
7446 is a decoder/driver IC used to drive the seven segment display.
- Working of this circuit is very simple. For every clock pulse the BCD
output of the IC2 (7490) will advance by one bit. The IC1 (7446) will
decode this BCD output to corresponding the seven segment form and will
drive the display to indicate the corresponding digit.
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