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Memory
Unit1
Aug 17, 2024
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This section describes all attributes of memory
The function of each of the following Memory types:
- ROM
Long term memory which stores the information necessary for the boot up of the computer
- RAM
Short term memory which stores information that is currently being processed
- EPROM
Programmable ROM which can be erased and reused
- EEPROM
Programmable ROM which can be erased and reused using an electrical charge
The purpose of each Memory features and an example of each:
- Speed
The faster the number the faster your computer can store and retrieve data e.g. RAM
- Size
The overall capacity 6GB etc
- word size
The maximum number of bits the CPU can process at one time
- Volatility
Whether it is permanent or temporary
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| CAPACITY | ACCESS SPEED | ACCESS METHOD | PORTABILITY | |
|---|---|---|---|---|
| Hard drive | 500GB-12TB | Slow | Direct | Low |
| DVD | 4.7GB | Slow | Index Sequential | High |
| External Hard drive | 1TB | Slow | Mid | |
| Memory card | 2GB-2TB | Fast | Direct | High |