Flashcards
Processors and Input, Output and Storage Devices
Cards in this deck (23)
- 1What's a HDD and SSDA component of a PC that stores your data.
- 2What's a Power SupplyIt provides the source of the PCs power
- 3What connects all the components of a PCThe Motherboard
- 4What does the Arithmetic logic unit do?Carries out all of the arithmetic operations can also make logical comparisons between items of data.
- 5What does the Control Unit do?It governs the operation of all the hardware. Controlls the Fetch, Decode, Execute cycle
- 6What does the Clock do in the CPU?It provides a regular burst of high to low voltage called a cycle.
- 7What does the Program counter do?Holds the address of the next instruction to be executed
- 8What do registers do?Are used for performing general arithmetic functions.
- 9What does the Memory Buffer register do?Stores values that are about to be added or subtracted in the ALU.
- 10What does the Memory address register do?Stores address of instruction or the data that is being fetched.
- 11What does the current instruction register do?Stores the current instruction that is being decoded
- 12What does the Address Bus do?Carries the address stored in the MAR to the memory.
- 13What does the Data Bus do?Carries data between memory and the MDR/MBR.
Bi-directional - 14What does the control Bus do?Sends control signals between control unit and memory.
Bi-directional - 15What happens in the fetch stage?-PC has the address of the next instruction
-Sent to MAR then to memory along address bus
-Contents of address can be sent along data bus to MDR/MBR
-Program counter then increases - 16What happens in the decode stage?-MDR/MBR sends data to CIR then decode unit
- 17What happens in the execute stage?-Instruction from decode unit is sent to MAR then to memory accross the address bus.
-Data is collected sent down data bus into MDR/MBR then into accumulator to then be executed - 18How do Multiple cores effect processor performanceThe more cores the faster it can process things as it is basically adding more processers.
- 19How does cashe memory effect processor performanceThe more it has the less the CPU has to go back and read from the RAM making the proccess faster
- 20How does Clock Speed effect processor performanceThe faster the clock speed the faster the CPU can carry out processes
- 21Explain Von Neumann processor architecture-Single storage system for programs and data
-Each instruction takes two cycles
-More robust - 22Explain Harvard processor architecture-Separate storage for programs and data
-Can complete instruction in single cycle
-Modern architecture - 23Explain CISC
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- AS level Computing Flashcards on Processors and Input, Output and Storage Devices, created by Jack Ives on 31/05/2017.
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- Jack Ives
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