memory Flashcards
1
Q
what does RAM stand for?
A
random access memory
2
Q
what does ROM stand for?
A
read only memory
3
Q
what are the properties of RAM?
A
- volatile
- can be changed any time
- stores programs currently being used by the user
- contains operating systems
4
Q
what are the properties of ROM?
A
- non volatile
- programmed during manufacture
- contains boot program
5
Q
what size is RAM?
A
it is large(4 GB or more in a typical computer)
6
Q
what size is ROM?
A
it is small (1 or 2MB required to boot the program)
7
Q
why does a computer have both ROM and RAM ?
A
- to boot the computer and to store current programs
8
Q
what is virtual memory?
A
virtual memory is used as an extension to RAM
9
Q
how does virtual memory effect the computer?
A
it makes it slower because access is slower
10
Q
what would adding more RAM do?
A
reduces use of virtual memory.
11
Q
what does volatile mean?
A
data is lost when the computer is turned off
12
Q
what is flash memory?
A
a type of ROM which can be rewritten
13
Q
properties of flash memory
A
- portable
- cheap
- high capacity
