Advantages of von neumann architecture

Answer 1

The von Neumann Model (1945)

•consists of 5 parts:

•Memory

•Arithmetic Logic Unit (ALU)

•Control Unit

•Input

•Output

Answer 2

Both program instructions and data are stored as identically coded symbols in the same randomly accessible main memory. The only way the machine knows whether it should decode the symbol obtained from memory as a program instruction or as data is which one it was looking for at the time the symbol was read.

This is in contrast to a Harvard computer, where program instructions and data are stored as totally differently coded symbols in completely separate often incompatibly implemented memories.

Each has its own advantages and disadvantages, and because of these even though almost all modern computers act as if they were purely Von Neumann computers, most are typically implemented as some blend of Von Neumann and Harvard features selected to best optimize performance while carefully hiding the Harvard features of the implementation from all programmers and users except the few programmers writing the very lowest levels of system code that must setup and manage those features.

Answer 3

One of the major advantages of the Von Neumann architecture is a separate memory and buses are not needed for data and instructions. This concept reduces hardware requirements and makes computers cheaper.

Answer 4

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Answer 5

The parts of a von Neumann architecture computer are:

• Arithmetic Logic Unit
• Control Unit
• Memory Unit
• Input/Output Unit(s)

The parts of a Harvard architecture computer are:

• Arithmetic Logic Unit
• Control Unit
• Instruction Memory Unit
• Data Memory Unit
• Input/Output Unit(s)

Note the minor difference.

Answer 6

• von Neumann - any computer architecture that stores both instructions and data in the same memory system.
• Harvard - any computer architecture that stores instructions in one memory system and data in a different memory system.

Most modern computers are a bit of both, with separate instruction and data cache memory systems the CPU itself runs as a Harvard architecture, while both cache memory systems access a large common memory that stores both instructions and data the machine looks to the programmer as a von Neumann architecture.

Answer 7

doing data input and output from Arithmetic and logic unite

Answer 8

1. CPU
2. Unified instruction/data memory
3. Control unit
4. I/O system