24. Von-Neumann Architecture Requirements

1. Single stream of instructions, sequenced by instruction counter.

2. Instructions stored with data in addressable memory.

3. Instructions encoded as numbers and are modifiable by arithmetic operations.

4. Radix 2 (binary) storage and math.

5. Word length is long enough for scientific computation.

6. Single address instructions, or single operand instructions, means that single, well-defined operations use exactly one memory address in combination with a register operand or immediate data.

• See also: Wikipedia article about instruction set (ISA), Von Neumann model , and PC architecture articles on the web.