4_digit_unit_counter_with_BCD_output_using_an_Intersil_ICM7217A_28_pin_DIP

Published:2009/7/21 21:37:00 Author:Jessie | From:SeekIC

4-digit unit counter with BCD output using an Intersil ICM7217A 28-pin DIP. All that is required is an ICM7217, a power supply and a 4-digit display. Add a momentary switch for reset and an SPDT center-off switch to blank the display or view leading zeros. One more SPDT switch gives you up/down capabilities. With an ICM7217A and a common-cathode calculator-type display this is the least expensive digital counter/display system you can make (courtesy Intersil, Inc.).



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