Download or read book My Revision Notes OCR Cambridge Nationals in ICT Levels 1 / 2 Unit 1 Understanding Computer Systems written by Brian Gillinder and published by Hodder Education. This book was released on 2013-06-28 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlock your full potential with this revision guide which focuses on the key content and skills you need to know.