Clear, carefully checked notes on computing, IT and networking, with sources listed on every post.https://blog.datasonic.net/https://blog.datasonic.net/blog/storage-devices-primary-secondary-memory/https://blog.datasonic.net/blog/storage-devices-primary-secondary-memory/A clear guide to what storage devices are, how primary and secondary memory differ, examples, how storage evolved, and how data is measured.Fri, 16 Oct 2026 00:00:00 GMT