3pcs DIY Multi Function Four Bit Digital Clock MCU Clock Kit

Features Use 4 bit 0 56 inch clock display luxurious and generous appearance PCB boards are high quality fiberglass boards which are treated by tin spraying in large factories with excellent quality The welding pad is large there is no flying wire and the component layout is beautiful It is specially designed for practical training Easy to withstand repeated dismantling and welding can improve the efficiency of use In order to reduce the difficulty of installation all components are direct plug ins MCU uses AT89C2051 or its compatible MCU and the program has been written It is equipped with power supply terminal and reserved battery interface to realize power off timing function It is equipped with a single chip computer 1C seat which is convenient for upgrading and learning Travel time is accurate and the error range of travel time is about 3 seconds per month Specification Shape size 55 x 55mmMaterial of PCB 1 6mm FR 4 sheet on one sidePower supply voltage 3 5V Package included 3 x DIY Multi Function Four Bit Digital Clock MCU Clock Kit