LEARN BY DOING

electronic educational kits to be assembled by the user comprising the common components of resistors, capacitors, semiconductors, solder, a printed circuit board and an instruction manual for building a motion detector including a motion sensor, a lens, a switch and a speaker; a strobe light including a flash tube and reflector, transformers and a neon light; a telephone including a key pad, a microphone, a speaker, a ceramic beeper and switches; a microphone including a microphone; a solder practice kit including a soldering iron, wire cutters and a speaker; a stereo tape player including a mounting case, a motor, pulleys and belts, switches and earphones; an electronic robot blinker; and an electronic temperature measuring kit including a front panel, a case and a dome switch