Hila Research Centre
Electronic Project 7
Binary to Decimal Decoding
Devices such as calculators use binary math to do calculations. The binary numbers are then decoded and displayed as decimal numbers. The circuit below uses a binary counter to count the pulses from a 555 IC and then uses a 4511 IC to decode and display the count on a 7 segment LED display.
Internal connections to the 7 segment display:
This project uses the Hila power supply. This supply uses 4 AA rechargeable batteries in series with a 56 Ohm resistor. If you are using a supply without this series resistor, remove R4 and add a 330 Ohm resistor to each LED.
Project from the Hila Research Centre - http://fox.nstn.ca/~hila
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