he Internet Archive now houses a collection of old-school calculators that you can boot up and use as if you had a physical version right in front of you.

The Internet Archive calls this new collection the Calculator Drawer. There are 14 calculators to choose from, including the HP 48GX, TI-82, TI-83 Plus, and even the Electronic Number Muncher, which is an 80s-era toy calculator. The Internet Archive doesn’t just emulate the interface of each device, either; it incorporates their physical design and buttons, making it feel like you have the actual device right in front of you.

The Internet Archive gets into more detail about how this all works in a post on its blog. It uses the MAME Artwork System to power its calculators — a branch of the open-source framework that recreates classic arcade games on various systems — which is how the Internet Archive managed to incorporate actual images of the calculators in the emulations.

If you need a refresher on how to use these calculators, the Internet Archive even uploaded a collection of original user manuals.

See the collection on the Internet Archive here and read more on The Verge.