Lecture Notes for Computer Architecture II - St. Cloud State University

PC –1977
Macintosh
- Graphical User Interface
Windows (Microsoft)
- GUI
- 85% of Operating System Market
Microprocessors are embedded in many other applications
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Memory Hierarchy
Register
Cache
Main memory
Disk
Access time capacity
- past
performance meant minimizing the use of memory
Languages
HLL expression
A = B+C*D
Assembly +, * store, move
1. LOAD R1,D
2. MUL R1,C
3. STORE R1,Temp1
4. Add R1, B
5. STORE R1,A
Frequency
of accesses Cost/bit
Registers
Memory
R1
B
C
D
A
Temp