One item mailbag! A look at the Swissmicro DM42, the world's most precise pocket calculator. A clone and improvement of the famous HP42S, with open source firmware based on the Free42 platform. https://www.swissmicros.com/dm42.php http://thomasokken.com/free42/ Forum: http://www.eevblog.com/forum/blog/eevblog-1159-worlds-most-precise-pocket-calculator/ EEVblog Main Web Site: http://www.eevblog.com/ The 2nd EEVblog Channel: null Support the EEVblog through Patreon! http://www.patreon.com/eevblog AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g Buy anything through that link and Dave gets a commission at no cost to you. Stuff I recommend: https://kit.com/EEVblog/ Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: null Likecoin – Coins for Likes: https://likecoin.pro/@eevblog/dil9/hcq3