The stored program concept (Edexcel GCSE Computer Science): Flashcards
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Who developed the stored program concept?
Who developed the stored program concept?
Alan Turing & John von Neumann
When was the stored program concept developed?
When was the stored program concept developed?
1940s
What two things are stored together in the stored program concept?
What two things are stored together in the stored program concept?
Program instructions and data
How did the stored program concept transform computers?
How did the stored program concept transform computers?
From single-purpose to general-purpose machines
Who designed the von Neumann architecture?
Who designed the von Neumann architecture?
John von Neumann
How many main components in von Neumann architecture?
How many main components in von Neumann architecture?
Four
What is the CPU's main function?
What is the CPU's main function?
Decode and execute program instructions
What does main memory store?
What does main memory store?
Program instructions and data
What does RAM stand for?
What does RAM stand for?
Random Access Memory
Is main memory volatile or non-volatile?
Is main memory volatile or non-volatile?
Volatile (needs continuous power to retain data)
What happens to RAM when power is turned off?
What happens to RAM when power is turned off?
Contents are completely wiped clean
Typical RAM capacity in modern devices?
Typical RAM capacity in modern devices?
4 to 32 GB
Three stages of fetch-decode-execute cycle
Three stages of fetch-decode-execute cycle
Fetch, Decode, Execute
How is main memory classified?
How is main memory classified?
Primary storage
Meaning of 'random access' in RAM
Meaning of 'random access' in RAM
CPU can jump directly to any memory location