EDVAC, proposed by John von Neumann in the 1940s, was an early electronic computer that introduced the concept of stored-program architecture, allowing both data and instructions to be stored in memory. It became operational in 1951, utilizing vacuum tubes, magnetic tape, and punched cards for its operations. EDVAC influenced subsequent computers like EDSAC, UNIVAC I, ILLIAC, and Manchester Mark I, which also adopted the stored-program model.

1. HISTORY OF COMPUTER -EDVAC
(ELECTRONIC DISCRETE VARIABLE
AUTOMATIC COMPUTER)

2. EDVAC
• which stands for Electronic Discrete Variable Automatic
Computer, is one of the early electronic computers and a
key milestone in the history of computing.
• EDVAC was Proposed by John von Neumann in the mid-
1940s
• EDVAC was designed to be a stored-program computer,
introducing the concept of storing both data and
instructions in the computer’s memory.

3. THE CONSTRUCTION OF EDVAC
• The construction of EDVAC began at the University of
Pennsylvania’s Moore School of Electrical Engineering, and
it became operational in 1951. EDVAC featured a central
processing unit (CPU), memory, and input/output
components. It used vacuum tubes for processing,
magnetic tape for storage, and punched cards for input.

4. CONTRIBUTION OF EDVAC
One of the significant contributions of EDVAC was its stored-
program architecture, allowing for more flexible and
efficient computation by enabling the computer to execute
different instructions without the need for physical rewiring.

5. EXAMPLES OF EDVAC
1. EDSAC (Electronic Delay Storage Automatic Calculator):**
Developed in the late 1940s at the University of Cambridge,
EDSAC was one of the earliest electronic computers with a stored-
program architecture, influenced by the work on EDVAC.
2. UNIVAC I (Universal Automatic Computer I):The UNIVAC I,
completed in 1951, was one of the first commercially produced
computers. While not a direct copy of EDVAC, it was influenced by
the stored-program concept introduced by EDVAC.

6. 3. ILLIAC (Illinois Automatic Computer): The ILLIAC series, developed at
the University of Illinois starting in the early 1950s, incorporated stored-
program architecture and was influenced by the work on EDVAC.
4. Manchester Mark 1: Built at the University of Manchester in
1949, the Manchester Mark 1 is another early computer that adopted
the stored-program concept, drawing inspiration from EDVAC.

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