| Multiprogramming |
|
|
|
|
|
|
|
|
|
|
|
|
| ä | When
a program reads a value on an I/O |
||||||||||
| device
it will need to wait for the I/O |
|||||||||||
| operation
to complete |
|||||||||||
| ä | Interrupts
are mostly effective when a |
||||||||||
| single
CPU is shared among several |
|||||||||||
| concurrently
active processes. |
|||||||||||
| ä | The
CPU can then switch to execute |
||||||||||
| another
program when a program waits for |
|||||||||||
| the
result of the read operation. (more |
|||||||||||
| later) |
|||||||||||
