Storage and I/O Devices
- Created by: Jamie Ripley
- Created on: 14-11-16 20:17
View mindmap
- Storage and I/O Devices
- Primary Storage
- Magnetic Storage (HDD) stores data on platters. Heads on the platters read data as it spins around
- Advantageous because it is cost-effective as it they have a high-capacity, yet are low cost, and can be used to store the OS and data, and to back up large amounts of data
- Optical Disks come in varying formats: CD-ROM/DVD-ROM, CD-RW/DVD-RW and Blu-Ray
- Light from lasers detect reflections from the surface of the data area of the surface; and in RW disks, you modify the surface by using a laser and burning pits to burn data. The colour difference is detected when it is red
- RAM (Random Access Memory) is volatile, temporary memory where running programs are stored ready for used by the CPU
- Primary Storage
- Cache (Immediate Access Storage) is temporary storage near the CPU for recently/frequently used instructions
- Primary Storage
- Secondary Storage
Comments
No comments have yet been made