4
9.1.2007
Copyright
Teemu Kerola 2007
What good is it for?
•Program execution speed is based on machine instructions executed by the processor (CPU), and not in the program presentation in high level language (C,
Pascal, Java)
•Understanding higher level topics is easier,
once one first understands
what happens at lower levels of the system
Why should
one compile Java programs (byte code)?
What does it
mean to compile Java programs?
What does it
mean to execute Java programs?
What does
it mean to execute C programs?
Why does one
need operating systems (OS)?
What does
the OS do? How is it structured?