* LED, $0.04650 @ 1000: http://search.digikey.com/us/en/products/WP710A10SRD%2FD/754-1593-ND/2769819
* CD74HC164EE4-ND $ 0.30994 @ 100 :http://www.digikey.ch/product-detail/de/CD74HC164EE4/CD74HC164EE4-ND/1506713* DIL14 Sockets @ 100: http://www.digikey.ch/product-detail/de/1-390261-3/A100205-ND/1125623 (Easier to change the IC if you kill it (wrong wiring, wrong polarity may kill the IC...))* 100nF (long leads) Capacitors @ 100: http://ch.farnell.com/multicomp/mc0805224z500a5-08mm/capacitor-ceramic-0-22uf-50v5v/dp/1694344 (Pour le découplage de l'alim près des IC, à monter sur les sockets)
* CR2032 holder, $0.4968 @ 100: http://search.digikey.com/us/en/products/3003/3003K-ND/227448
* Pushbutton, $0.0916 @ 100: http://search.digikey.com/us/en/products/FSM4JH/450-1650-ND/1632536