Systems Architecture (AQA GCSE Computer Science): Flashcards
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12 cards from this deck
Von Neumann architecture
Von Neumann architecture
Design where both instructions & data stored in same memory
Basic pattern of computer system operation
Basic pattern of computer system operation
Input → Process → Output (with Storage)
CPU stands for
CPU stands for
Central Processing Unit
What CPUs are made of
What CPUs are made of
Billions of tiny electronic switches called transistors
ALU stands for
ALU stands for
Arithmetic Logic Unit
ALU arithmetic operations
ALU arithmetic operations
Addition, subtraction, multiplication, division
ALU logical operations
ALU logical operations
AND, OR, NOT, comparisons (equal, greater/less than)
ALU binary shift operations purpose
ALU binary shift operations purpose
Quick way to multiply or divide by 2
Control Unit function
Control Unit function
Coordinates everything in CPU like an orchestra conductor
Control Unit main responsibilities
Control Unit main responsibilities
Fetch & decode instructions, send signals, ensure correct order
CPU clock function
CPU clock function
Vibrating crystal that keeps CPU synchronised with pulses
GHz (gigahertz) meaning
GHz (gigahertz) meaning
Billions of pulses per second