Summary Computer architecture and networks hoorcollege 2
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Course
Computer architecture and networks
Institution
Universiteit Utrecht (UU)
Computer architecture and networks lecture 2. Notes of the lecture Computer Architecture and Networks (INFONW). Summary is in English and is supported with pictures and examples for extra clarity. Lessons taught at Utrecht University, Informatica.
computer architecture and networks hoorcollege 2 computer architecture and networks computerarchitectuur en netwerken infonw infonw
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Computer architecture and networks
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Hoorcollege 2:
Figure of the main components:
CPU and Memory are two decoupled hardware from each other due to:
- Memory modularity (modulariteit), we can switch out memory and plug in new one’s
without replacing the whole CPU
- Memory module heterogeneity: for example, clock speed, latency, timings and capacity.
- CPU adaptivity: 1 CPU working with many memory configurations.
Cache: buffer between CPU memory and main memory. To adapt (aanpassen) the memory
configurations, BIOS configuration.
Common properties from input and output devices are:
- Specialised devices, not general-purpose but doing one task.
- Can include a J.V. Neumann architecture internally themselves
- 1-way or 2-way communication
, Hardware components acts at different speeds than your CPU, this is because of:
- Internal procession (e.g. MS Kinect)
- Signal digitisation (e.g. a mouse has an infrared and need to convert the signal)
- Data transfer mode
- Heterogeneity: number & diversity of devices.
Computer architecture components communicate via BUS. A Bus is a connection between:
- Components inside a device
- Components inside a CPU (internal bus)
- Components inside Computer (memory bus, PCIe bus, PCI bus, USB)
A bus consist of 3 tracks, each have a variable width:
- Control bus: Controls communication between the components
- Address bus: Address requests
- Data bus: Data is send over
Line-based communication:
- Sender puts information on bus
- Information travel through bus
- Receiver takes information from
the bus
No other information can be put on a bus until it’s empty and ready again (bus-busy).
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