Many modern phone users have not used watches for a long time, because the gadget is always at hand. It is important for them that the date and time are set correctly, since failures can lead to late awakening for work and constant delays. That's why

Every radio amateur has a K155la3 microcircuit lying around somewhere. But often they cannot find serious use for them, since many books and magazines contain only diagrams of flashing lights, toys, etc. with this part. This article will look at