Quiz 3 Flashcards
(21 cards)
What are the 4 types of memory
Registers, RAM, cache and ROM
What does RAM stand for?
Random access memory
What is RAM?
High speed volatile memory that is used as the main memory in the computer
Is RAM volatile or non- volatile
Volatile
What is volatile memory?
Temporary memory that requires power to retain its data
What is Non- volatile memory?
Memory that is permanent and keeps its contents even when it has no power
How fast is RAM?
RAM is slower than CPU cache memory, but much faster than secondary storage
What does RAM store?
Data, files and programs
What does ROM stand for?
Read only memory
What is the function of ROM?
It’s uses as main memory
Is ROM volatile or non-volatile
Non- volatile
What does ROM look like?
Small factory- made chip built into the motherboard
What does the ROM contain?
It contains all the instructions a computer needs to properly boot up. These instructions are called the BIOS
How does the CPU use ROM?
The CPU reads instructions from ROM which tells the CPU to perform self- checks and set up the computer
How do operating systems use RAM?
When a computer boots up, the operating system is copied from secondary storage to RAM
What does the amount of RAM and ROM that a system needs depend on?
The purpose and type of system
Do Non- embedded systems have more RAM or ROM
RAM
Why do embedded systems have more RAM?
They often need to write data to main memory
How is ROM used in non-embedded systems
Typically only used for BIOS which doesn’t require much memory
Where is RAM and ROM stored in a non- embedded system
It’s stored on the motherboard away from the CPU
