2. AQA GCSE (8525) SLR1 - 3.4 Von Neumann architecture

What does the Von Neumann architecture specifically include?

• A central processing unit with a single control unit

• Multiple arithmetic logic units

• External memory only

• Parallel processing capabilities

What is the role of the arithmetic logic unit (ALU) in the CPU?

• It stores data temporarily

• It performs arithmetic and logical operations

• It manages the input and output operations

• It increases the processing speed by parallel execution

What is stored in the program counter?

• The current instruction being executed

• Data fetched from memory

• The address of the next instruction to be executed

• The result of the last computation

What does the memory address register (MAR) hold?

• The next instruction

• The previous instruction's address

• The actual data to be processed

• The address of where data is to be fetched or stored

What is the function of the accumulator in the CPU?

• To hold the address of the next instruction

• To store the CPU's configuration settings

• To synchronize the CPU's operations

• To hold the results of calculations

During the fetch-execute cycle, what happens after the instruction is fetched into the CPU?

• The instruction is decoded by the control unit

• The data is written back to memory

• The instruction is immediately executed

• The program counter is reset

What is the primary purpose of the internal clock in a Von Neumann architecture CPU?

• To store data temporarily

• To decode instructions

• To perform arithmetic operations

• To synchronize components with a constant rate

What type of memory is described by having small amounts of high-speed memory to help control instructions and data around the CPU?

• External hard drive

• Cache

• RAM

• ROM

What does the memory data register (MDR) hold?

• The address of the next instruction

• Any data that has been fetched from memory or is about to be written to memory

• The current operation code

• The result of the last arithmetic operation

In the Von Neumann architecture, how are both instructions and data stored?

• On external storage devices

• In separate memories

• In the same memory in binary form

• In the control unit