SMARTWATCH Non-volatile clock for TDS9092

l a socket which plugs into the TDS9092 application position and the final PROM fits into it

l its type number is Dallas Semiconductor DS1216E

l read and write the date and time by means of W@ and W! which can be found in the TDS9092 library software routine _SMART.TDS

l the clock is kept non-volatile by means of lithium batteries within the device

l note that the Smartwatch does not work with RAM, only EPROM

Picture for illustrative purposes only.