Figure 1.1. Basic functional units of a computer.

1
Arithmetic
and
Input
logic
Memory
Output
Control
I/O
Processor
Figure 1.1. Basic functional units of a computer.
2
Figure 1.2. Connections between the processor
and the memory.
3
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4
Printer
Disk
OS
routines
Program
t
t
t
t
t
t
1
2
3
4
5
Time
0
Figure 1.4. User program and OS routine sharing
of the processor.
Figure 1.4. User program and OS routine
sharing of the processor.
5
Main
Cache
Processor
memory
memory
Bus
Figure 1.5.
The processor cache.