As well as a lot of typewriters i also have a lot of calculators, but the biggest and most impressive is my Silver-Reed 1250PD. This is a mains powered machine, in production since 1978 so i assume mine was built sometime in the 1980s. It hasn't been powered up for years and was quite mucky, after a good clean i plugged it in and... it worked perfectly! The VFD display a very pleasing cyan.
The calculator is intended for desk tops and heavy duty number crunching, no doubt would have been right at home next to a typewriter. It has it's own built in printer though the ribbon seems to have been completely worn out. Something else to get a ribbon for then.