What is an Operating System (OS)? 40 August 9, 2022 This content is exclusive to Inner Circle Members. Please enter the Inner Circle code in the box below and press Enter. If you are unsure what the code is please check your email, we usually send out the code by email on the 28th of the month. If you’re struggling, you can drop us an email at [email protected] or give us a ring on 01229 777606 and we’ll get you sorted. Inner Circle Code: You might also be interested in: How to change default programs in Windows eBook: What You Should Know about Your Keyboard eBook: How to Control Your Tablet How to set up and start using email Topics in this article: Android, Apple, Apps, Glossary, Linux, Macs, Operating Systems, Windows