AT89C2051 Six digital clock suite bulk, single chip microcomputer digital electronic clock (C1A4)

  AT89C2051 Six digital clock suite bulk, single chip microcomputer digital electronic clock (C1A4)     Product  Description    1, this clock suite, 6 digit control chip using AT89C2051, digital tube USES 3 only 0.36 inch double a red Yang type LED digital tube, display clear, high brightness, because is to scan display mode, so the digital tube abcdefg adopted bus parallel each foot, change the R1 - R7 resistance value can change the display brightness.
2, S1 button for calibration time, hold a minimum of 2 seconds into the time calibration, shift, exit, quick touch point used to adjust time value.
3, this circuit to increase a spare battery slot, 3 v power failure AT89C2051 adopts the backup battery power supply, the clock will not stop, but the digital tube display, call backup batteries lose function (charging status), AT89C2051 adopts the external power supply, digital tube display normally.You can add a power switch, shut off the power when go out, come back again to open, allowing the clock display, achieve the goal of saving electricity.Our shop not form a complete set of batteries, buyers will make their own solution.
4, prompt: such as digital tube display properly, please power off and remove the spare battery, put on again after the electricity is back to normal.   Any requirement ,contact me freely.   Product Show       Company Services "Customer is always god.Honest is our nature".Thought what the customer thought.Cooperate with customerssincerely.Oriented to the market.Set up a good platform on Sales and Services in order to serve our clients perfectly.   We used to adhere to the "quality first ,reasonable price,fast delivery and service-oriented" development philosophy and purpose! We have many different kinds of goods(as your request) And The most important, you will get the lowest price with high quality.   ---------------------------------------------------------   Shenzhen Wonderwing Electronics Ltd.   ADD: Room 2401-2404, REITH CENTER (Tower A, Century Holiday Plaza) No.9030 north of Shennan Rd. Nanshan, Shenzhen, China       Shipping Terms   1. We will arrange shipment within 2-3 working days once get your payment.   2. We usually ship via Global express company: UPS/DHL/EMS/FEDEX. if you have better express service company , Please tell us then. We'll choose your preferred ways.   3. We are not responsible for any accidents, delays or other issues that we couldn't control, But we will contact the shipping company which is our long term cooperation.   4. Any import duty or charges are for the buyer's responsibility.           ----------------------------------------------------------