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Series:Stopwatch counter
Type:PCB DIY KIT
Kit Name:7 Segment LED 4-Digit Stopwatch Display Electronic Circuit Traini
RAM Size:N/A
MPN:N/A
Features:7 Segment LED 4-Digit Stopwatch Display Electronic Circuit
Country/Region of Manufacture:Sri Lanka
Core:N/A
4-Digit StopwatchDear Sir/Madam,Good day to you !Thanks for referring our products.This electronic learning kit is designed for youngsters and hobbyists to learn fundamental concepts and practice skills such as component identification, soldering, and testing. Before diving into programmable electronics such as Arduinos, this book is highly recommended for anybody interested in electronics. The IC CD4026 used in this project has both a counter and 7-segment decoder in one package. This IC has a full static counter which is ideal for low power decade counting seven segment displays, frequency division seven segment decimal displays, clocks, watches, timers, counter/display driver for meter applications. One push button is used to stop /start the stopwatch and one push button is used to reset the stopwatch. Working Principle This stopwatch is designed to measure the amount of time that elapses between its activation and deactivation. Pin 1 which is the Clock pin is connected to the output of a 555 Timer Astable configuration. Free running pulse generated by 555 Timer IC is connected to the first CD4026 ICs whereas the carry out of each CD4026 IC is connected to the next CD4026 IC. When a given CD4026 counts up to 9, then becomes zero with the next pulse, the carry out pin is clocked for the next IC to step up and so on.CD4026 is a 5 stage johnson decade counter belonging to a CD4000 series. It has many distinctive features than other decade counters. Firstly, it is ideal for applications having low power consumption requirement. Secondly, CD4026 counts from 0 to 9 and then resets to 0.The L7805 used in this circuit is a widely used linear voltage regulator that reduces voltage to 5V given any voltage between 7V to 12V. Payment:We accept Paypal only, It is fast, Easy and Safe.Payment must be completed within 7 days.PLEASE NOTE: S&H DOES NOT INCLUDE DUTIES, LOCATL TAXES OR ANY OTHER IMPORTATION FEES.Please list your special requests (color, packages, etc.) in the PAYPAL NOTES SECTION when you make payment.Shipping:Free Shipping to Worldwide.Orders processed within 24-48 hours of payment verification. it will take 15-25 days for delivery. but Customs will random inspection some parcel, so that’s why some parcel need more than four weeks to arrive. Shipping time is only estimated and not guaranteed.We only ship to confirmed PAYPAL addresses. Your PAYPAL address MUST MATCH your Shipping address.Package will Shipping by E-Package with Tracking Number (7-15 Days to Delivered). Items are shipped via SriLaka Post Air Mail.Guarantee:Good Good quality. Buy with confidence!If you are not satisfied when you receive your item, please return it within 7 days for a replacement or money back. Please contact me before you return it.Not accept returning of electronic components.Full refund after we receive our original item, Note: Return shipping is to be paid by the Buyer.We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important to us. We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns. Thanks & Regards
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