computer systems Flashcards
computer
programmable device that takes in data and processes it into useful info and then outputs info so it can be used
examples of:
general purpose
embedded systems
mobile phone
coffee maker
embedded systems
specialised, can only do a limited number of things
-control larger systems
-function w out a user
-limited resources
-easier to design and produce
general purpose computer
can complete a various amount of tasks the user asks for
-require a use
-very little ram, likely to use rom
-lots of resources (memory storage cpu)
software
programs that run the hardware
-system software
-utilities
-application
cpu
controls everything
hard drive
main storage deivice
operating system is stored here
application software
designed to carry out specific tasks other than running the computer it self
operating systems
regulate interactions
roles of operating system
input and output device control
program management
system security
processor managemen
program mangament
memory management
copies necessary parts of application to ram
checks for usage which clears ram when idle
security
user accounts to access and rights
utility software
defragmentation software
