In which of the Computer Architecture, an external system bus exists ?

Question

Question

This question was previously asked in

NIELIT Scientific Assistant IT 5 Dec 2021 Official Paper

Answer 1

The correct answer is option 4: Von Neumann Architecture

Key Points

Von Neumann Architecture is a computer architecture model that uses a single storage structure to hold both instructions and data.
It features a system bus which consists of:
- Data Bus – carries data between CPU, memory, and peripherals.
- Address Bus – carries memory addresses from CPU to memory.
- Control Bus – carries control signals to coordinate operations.
This architecture enables communication between the CPU and memory using an **external system bus**.

Additional Information

Pascal Architecture: Not a computer hardware architecture; Pascal is a programming language.
Dennis Ritchie Architecture: No such architecture; Dennis Ritchie is known for C programming and UNIX OS.
Charles Babbage Architecture: He designed the Analytical Engine, but it did not use a modern external system bus.

Hence, the correct answer is: option 4: Von Neumann Architecture