https://stream.echo6.co/videos/watch/a149f850-33f4-42ba-856d-67eb2e39ea38 1979, a screaming 613KHz clock, killer graphics, and it's a Hewlett Packard, it doesn't get much better than this! Dave powers up the the classic HP85 Scientific / Engineering Professional Personal Computer and has a play around. Forum: http://www.eevblog.com/forum/blog/eevblog-904-hewlett-packard-hp85-professional-computer/ Teardown: https://www.youtube.com/watch?v=l5SzKM7g5Ds Repair: https://www.youtube.com/watch?v=14KncLx5frg User Manual: http://www.series80.org/PDFs/HP85-MainBW.pdf Pocket Guide: http://www.series80.org/PDFs/HP85-PocketGuide.pdf Documents: http://www.hpmuseum.net/collection_document.php http://www.series80.org/Manuals/ EEVblog Main Web Site: http://www.eevblog.com The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2 Support the EEVblog through Patreon! http://www.patreon.com/eevblog EEVblog Amazon Store (Dave gets a cut): http://astore.amazon.com/eevblogstore-20 T-Shirts: http://teespring.com/stores/eevblog 💗 Likecoin – Coins for Likes: https://likecoin.pro/@eevblog/dil9/hcq3 Mon, 11 May 2026 11:41:36 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/a149f850-33f4-42ba-856d-67eb2e39ea38 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.