Hi, I use the Ricoh R5C313 chip. Cheap, reliable, available and Y2K compliant. Needs only some external parts, and can be read from PIC. At us, in Hungary it costs $1.5 or so. I hope this helps. Imre On Fri, 14 May 1999, Roland Andrag wrote: > Hello again.. > > Another off topic - I need to implement a clock that can keep time over a > few months or even a year, including date. This is such a common thing (how > many millions of digital watches in the world?) that there must be a one > chip solution - does anyone know what it is? > > Thanks > Roland > >