Page 14 - 00inner.cdr

ENIAC

• Electronic Numerical Integrator and Computer (ENIAC), the first
general purpose electronic digital computer was invented by John
Mauchly and J. Presper Eckert in 1946.
• It consisted of 18,000 vacuum tubes and was 1000 times faster
than the Mark I. It could add two large numbers in 200
microseconds.
ENIAC

EDSAC
• EDSAC stands for Electronic Delay Storage Automatic
Calculator. It was designed by Professor Sir Maurice Wilkes at
the University of Cambridge on 6 May 1949.

• This computer ran the first graphical computer game,
nicknamed ‘Baby’.
EDSAC
EDVAC
• Electronic Discrete Variable Automatic Computer (EDVAC) is a modern type of computer
that came into existence with John von Neumann’s development of software, written in
binary code.

• It was John von Neumann who started the practice of storing data
and instructions in a binary code, in the memory. Neumann joined
hands with Presper Eckert (American electrical engineer) and
John Mauchly (American physicist) in a consulting role and
EDVAC was built using the binary code in 1950. It was an
improved version of John von Neumann ENIAC.
• EDVAC’s concept of storing different programs on punched cards
led to the advancement of the computers that you know today. EDVAC

UNIVAC I
• Universal Automatic Computer I (UNIVAC I) was the world’s
first commercially available computer, designed by J. Presper
Eckert and John Mauchly in 1951.
• It was the first computer to handle both numeric and text data.

It was also the first computer that was equipped with a
UNIVAC I magnetic tape unit and used the buffer memory.
Try It Out #Creative Thinking

Write down the full forms of.
1. ENIAC ____________________________________________________
2. EDSAC ____________________________________________________
3. UNIVAC ____________________________________________________
4. EDVAC ____________________________________________________

14