MULTIFUNCTIONAL OPERATIONS: This soldering kit for calculator with 7 digit LED1602 display is capable of performing basic arithmetic operations. It also supports 4-5 ring color ring resistors/LED current-limiting resistors/decimal and hexadecimal/square root arithmetic. Powerful function. It can meet most areas of calculation. SIMPLE ASSEMBLY: This 7-bit LED1602 display calculator kit is not complicated to assemble. You can do it according to our drawings and the PCB marked above the location in the easiest way. Of course, you should also have some welding skills as a prerequisite. When you complete this kit, you will be proud of you. EXTENSIVE PROJECTS: This soldering kit is suitable for personal hobbies, welding group activities, school welding programs, helpful to improve welding skills and a fun project for friends, classmates and welding exchanges together. LED CALCULATOR KIT: By soldering our calculator kit, you will get a delicate desktop calculator, while improving welding skills, and at the same time, you will get a practical device to increase your efficiency in your study or work. SPECIAL GIFT: The 7 digit DIY calculator kit can be given to a welding enthusiast who is close to you. You can also finish it to give to your coworkers or friends. Its practicality is for a birthday or holiday gift. It will be a gift that will surprise people., Weight: 0.36266042099 Pounds, Manufacturer: Faeymth