Types of processor and storage- paper 1 Flashcards
What is a RISC processor and what are its’ key features?
Small simple instruction set
Each instruction is approximately one line of machine code and takes one clock cycle
Compiler has more work to translate high level code into machine code
More RAM required to store the code
Pipelining is possible because each instruction is one clock cycle
What is a CISC processor and what are its’ key features?
Large instruction set
Compiler has less work to translate high level code into machine code
Less RAM required since code is shorter
Many specialised instructions are made even though few of them are used
What is a multi-core system?
Multiple independent cores that can complete instructions separately- resulting in higher performance
What is a GPU?
Has a lot of independent processors which work in parallel making it very efficient at completing repetitive tasks
What are the features of RAM?
Random access memory is a type of fast main memory.
Used to store data and programs the computer is currently using.
RAM is volatile
What are the features of ROM?
Read only memory
Stores bootstrap routine
Non volatile
What is virtual storage?
When information is stored remotely.
What are the different points you should talk about when asked a storage essay question?
Speed
Cost per storage unit
Durability
Portablity
What are the advantages/disadvantages of magnetic storage?
Fast - not as fast as solid state
Cheap
Long life and reliable
Not very portable and can be easily damaged
What are the advantages/disadvantages of solid state storage?
Very high access times
Very expensive
Vulnerable to abrupt power loss
Very compact and easy to transport
What are the advantages/disadvantages of optical storage?
Slow access speeds
Medium cost
Can lose data very easily if scratched
Easily transportable.
