Bill of Materials

The amount indicated at the bottom of the materials list does not include tax, shipping, and other miscellaneous costs such as electricity. In addition, the prices given by the table will change based on market conditions - most likely higher >_<. Notice that the particular family of logic chips used for this clock has been changed over to CMOS, from LS, for lower power consumption.

If one were to total the cost of the table above, the approximate cost the project would come out to be $123.81 without the inclusion of shipping and taxes. For such an amount, one could have purchased several digital clocks. Though this is true, this was a hobby project that provided a certain value of entertainment and learning experience.

Layout

Determining the best layout for the chips on the board involved a "trial and error" based approach by inspecting how much routing was to be involved for each possible made up configuration.