1.1
- Created by: MrMtson
- Created on: 12-04-18 09:25
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- 1.1 systems architecture
- Von Neumann Architecture
- MAR (Memory Address Register)
- Receives a memory address from the PC sending it along the address bus to the correct location in memory
- MDR (Memory Data Reister
- the instructions and data sent along the data bus and is stored in the MDR
- Program Counter
- points to the next instruction in memory, copies its value to the MAR, INCREMENTS BY ONE
- Accumulator
- When the instruction is executed the results are stored here. It holds a running total
- CPU
- A CPU is the part of the computer that completes the processing it fetches and executes instructions
- MAR (Memory Address Register)
- Common CPU components and their functions
- ALU (Arithmetic Logic Unit)
- Performs any maths and logic calculations
- CU (Control Unit)
- Provides control signals so data goes to the place it is supposed to. Controls the clock speed
- Cache
- ALU (Arithmetic Logic Unit)
- How common characteristics of CPUs affect their performance
- Clock Speed
- The number of fetch execute cycles per second measured in HZ
- Cache Size
- Contains commonly used instructions. Super Fast Memory located on the CPU itself.
- Number of Cores
- The more cores the more instructions can be processed at once
- Clock Speed
- Embedded System
- Purpose of embedded systems
- A computer that is fully contained within the device it controls
- Examples of Embedded systems
- Examples include a Microwave, Plane, Washing machine
- Purpose of embedded systems
- Von Neumann Architecture
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