Peripherals

Interfaces

software and hardware that allow communication between peripherals and the processor


Functions of Interfaces
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Buffering - temporary data storage
Data Format Conversion - Digital to Analogue (and visa versa!)
Protocol Conversion - Odd and Even Parity
Voltage Conversion - to aviod frying the motherboard (Peripherals use higher voltage)
Handling of Status Signals

Buffer Vs Spooler
Spooler - software solution temporary memory storage - uses Fast Backing Storage
- Spooler because it can use all your available backing storage


Solid State Storage Devices

memory which has no moving parts
use less battery - no moving parts to power
less easily broken
physically smaller