Flashcards
CPU Test
Cards in this deck (26)
- 1Fetchreceive instructions from a memory address
- 2decodeidentify the operation from the instruction
- 3executelink up parts of the CPU needed to carry out operations
- 4Address Bussends the addresses (locations) of the instructions or data from the processor to main memory. 1 way only
- 5Data bussends the data/instructions for processing/storing to and from main memory. 2 way
- 6Control Bussends signals to and from the control unit to other parts. 2 way
- 7Diagram of the Von Neumann architecture (Processor)Enter text here...
- 8Diagram of the Von Neumann architecture (Main Memory)Enter text here...
- 9Diagram showing the direction data flows the CPUEnter text here...
- 10MARMemory Address Register - records the memory address of the data/instruction to be fetched or stored
- 11MDRMemory Data Register - stores data/instructions after being fetched from Main Memory
- 12PCProgram Counter - contains the memory address of the next instructions
- 13ACCAccumulator - stores the result of calculations
- 14CIRCurrent Instruction Register -
copied from the MDR, holds the current instructions to be executed - 15Roles of CPU• receives instructions from the computer
• processes received instructions
•executes programs
•manages computer hardware
•handles communication between components - 16Role of Control Unitis to send control signals between different internal components
- 17Role of Arithmetic Logic Unitto perform arithmetic and logic calculations using +,-, AND,OR
- 18Role of CacheIt is a high speed memory used to store data before it is processed by the CPU
- 19Role of the Buspasses signals between two or more independent components of a computer system
- 20What is a Busa computer bus is a set of parallel wires connecting two or more independent components of a computer system
- 21Factors that can influence the performance of CPUs- Clock speed
- Number of cores
- Size of Cache - 22What is a Peripheralthey are any devices that are not directly connected to the CPU eg. Mouse, keyboard, printer etc
- 23Secondary storage devicesare external devices used for storage
- 24what do registers dothey store specific instructions
- 25where is the cache locatedeither inside the processor (internal cache)
OR
on the motherboard (external cache) - 26function of cache memorystores high speed data from the processor before sending it to the RAM