جزئیات کتاب
فرمت
جلد سخت
صفحات
16
زبان
انگلیسی
منتشر شده
Oct 1, 2000
ناشر
Troll Communications Llc
ISBN-10
0816761965
ISBN-13
9780816761968
توضیحات
Kids discover the wonders of electricity with this great kit containing everything they need to build a real doorbell without using any tools. It includes a transistor, resistors, a transducer, an Led, connector wires and springs, and a push button. All parents need to provide is a 9-volt battery.