السلام عليكم
دائرة سرعة ضغط زر الإجابة عن طريق الدائرة المتكاملة 555
[img]http://www.*********.com/files/69958953/quizcd.gif[/img]
[img]http://www.*********.com/files/187471086/quizsb.gif[/img]
resistors: 470 ×4, 1k ×2, 10k ×8
capacitors: 0.1

F ×4, 1

F radial
diodes: 1N4148 ×4
LEDs: 1 each red, green, yellow and blue, all 5mm diameter
555 timer ICs (such as NE555) ×4
DIL sockets for ICs: 8-pin ×4
bleeper suitable for 9V
on/off switch
push switch ×5
battery clip for 9V PP3
2-core cable such as 'figure 8', about 8 metres
stripboard: 10 rows × 50 holes