John von Neumann's "First Draft of a Report on the EDVAC" proposes a stored-program computer architecture where both program instructions and data are stored in the same memory. This foundational document outlines the logical design of the Electronic Discrete Variable Automatic Computer (EDVAC), a machine that would embody this revolutionary concept. Von Neumann details the essential components of such a computer: a central processing unit (CPU), memory units, input/output mechanisms, and an arithmetic unit.

The report's central thesis is the feasibility and superiority of the stored-program concept for automatic computation. Key ideas include the separation of control functions from arithmetic operations, the use of binary representation for both instructions and data, and the concept of a universal computing machine capable of executing any sequence of operations. Readers gain understanding of the fundamental architectural principles that underpin nearly all modern digital computers.

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Key concepts

Stored-program computer — A computer architecture where program instructions and data are stored in the same memory space.
Central Processing Unit (CPU) — The component responsible for executing instructions and performing calculations.
Arithmetic Logic Unit (ALU) — The part of the CPU that performs arithmetic and logic operations.
Memory Unit — The component responsible for storing both program instructions and data.
Input/Output (I/O) Mechanism — The system for transferring data and instructions into and out of the computer.