Low Cost Time of Day Clock for Car Radios
Gil Schultz · SAE technical papers on CD-ROM/SAE technical paper series · 1989
Today some semiconductor chips can be replaced with software. The time of day implementation presented in this paper now costs only pennies instead of dollars more then a non clock radio. This is possible because the need for external clock chips has been eliminated in many applications. All of this and even more is possible with todays selection of CMOS microprocessors.