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1
Processor
IR
ALU
Rn -
1
n general purpose
registers
Figure 1.2. Connections between the processor and the memory.
Chapter 7 material. The most important chapter in the
book. Chapters 2-6 develop the theory of the different
parts of the CPU and the actual instructions
Input
Output
Figure 1.3.
Memory
Processor
Single-bus structure.
Chapter 4 covers the concept and operations of the
bus and how various components connect to it.
Printer
Disk
OS
routines
Program
t0
Figure 1.4.
t1
t2
t3
t4
Time
t5
User program and OS routine sharing of the processor.
This diagram show the time sharing aspect of a basic
computer program. Actually, the Operating System
(OS) gets several time slices also. The interaction of
the OS and programs will be a major topic that is
covered in the second half of the course.
Main
memory
Cache
memory
Processor
Bus
Chapter 5 material. A simple diagram, but a lot happens here.
The operation of the computer memory involves both
hardware and OS concepts; this maerial in Chapter 5 also
prepares you for the discussion in Chapter 10 of the OS
textbook. Movement of data from the processor to the cache
to main memory to the disk drive is a multifaceted process.
The disk drive aspect is covered in the OS part of the course