CPU Architecture, Performance & Embedded Systems (OCR GCSE Computer Science): Flashcards
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Practise the cards
14 cards from this deck
What is the CPU called?
What is the CPU called?
Brain of the computer
What does ALU stand for?
What does ALU stand for?
Arithmetic Logic Unit
Operations performed by ALU
Operations performed by ALU
Arithmetic operations and logical operations
What does CU stand for?
What does CU stand for?
Control Unit
CU main role
CU main role
Manages and controls CPU operations
CU role in fetch-execute cycle
CU role in fetch-execute cycle
Decodes the fetched instruction and controls sequence of execution
Type of memory cache is
Type of memory cache is
High-speed memory within the CPU
What cache stores
What cache stores
Frequently used instructions and data
What registers are
What registers are
Small, fast storage locations inside the CPU
What Program Counter (PC) stores
What Program Counter (PC) stores
Address of the next instruction to be executed
What MAR stores
What MAR stores
Address of data or instruction to be fetched from or written to memory
What MDR stores
What MDR stores
Data being fetched from or written to memory
What Accumulator (ACC) stores
What Accumulator (ACC) stores
Intermediate data results from ALU operations
When cache is checked
When cache is checked
Before fetching data from main memory