A half an hour summary of the Computer Systems theory exam in OCR J277 GCSE Computer Science which will hopefully be useful for that last minute revision. If you have this exam very soon, then best of luck!
To learn the content in the first place, or to revise more thoroughly (as you 100% should if you have more time), please do see my full playlist of more detailed videos that are specific to this particular exam: https://youtube.com/playlist?list=PL04uZ7242_M5KDdD9XnuWb2MNYsM57HpU
Timestamps:
0:00 Introduction
0:22 1.1 Systems Architecture
4:32 1.2 Memory and Storage
13:29 1.3 Computer Networks, Connections, and Protocols
19:29 1.4 Network Security
23:30 1.5 Systems Software
26:31 1.6 Impacts