4004/8008 in calculators? Which ones?

Recently, someone made the comment that the 4004 and 8008 were used in some old calculators. Can anyone supply brands and/or models that would have used these? My company is having a big junk sale of tables, chairs, and old calculators and typewriters soon, and the state is having an auction this weekend. I already snuck into the store room and opened up one of the oldest calculators, but it had some big 40-pin ceramic chip on it with a number I'd never heard of. I'll probably pick up a couple just because they have some nice nixie tubes in them, if they go cheap enough, but I'd like to score some old CPUs at one of these events if they're there. Any suggestions? -Bill Richman bill_r(a)inetnebr.com http://incolor.inetnebr.com/bill_r (Home of the COSMAC Elf Simulator!)