Like many early microcomputers, the Commodore VIC-20 did not come with an interna real-time clock built into the system.

Tiny RTC DS1307 module White LED strip, 5 m Hardware Setup The hardware setup is pretty straightforward. The Arduino Uno is powered by an external DC supply (12 V) through its DC input socket and 5-V ...

He’s made a real-time-clock module controlled by a rubidium frequency standard, and since it also includes a GPS clock he can track local time dilation effects by comparing the two.

Using an Arduino Mega, DS3231 Real Time Clock Module, Eight stepper motors 28BYJ-48 with ULN2003 Driver, 82 cm Wooden strip 19x19mm, Steel Wire 1m, 46 Washer head screw 4.2 x 14 mm, 16 Button head ...

“Here is the Kraztech Real Time Clock (RTC) Module that uses the Microchip MCP7940. The Kraztech RTC Module is intended for the opensource Arduino platform but can easily be used with any ...