RAM & ROM Flashcards
All 5 cards in this deck
What is RAM?
Volatile primary storage that loses its contents when power is switched off and can be read from and written to.
What is ROM?
Non-volatile primary storage that keeps its contents when power is switched off and can only be read from, not written to.
What does RAM hold while a computer is running?
The operating system and the programs and documents currently open/in use.
State two items that would be stored in the ROM of an embedded system.
e.g. a car's 'Follow Me' distance-keeping system
- Start-up instructions / BIOS / bootstrap (where to find the OS).
- Firmware / the instructions to run the 'Follow Me' system.
State three items of data that would be stored in RAM in a car's 'Follow Me' distance-keeping system.
Current distance from the car in front; the set distance from the car in front; the current speed of the vehicle. ('speed' or 'distance' alone is not accepted.)