By Topic

The Genesis of an Early Stored-Program Computer: CSIRAC

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)

One of the earliest vacuum-tube stored-program computers (CSIRAC) was developed in 1947-1951 under the auspices of the Australian Council for Scientific and Industrial Research. The word length was 20 bits, and storage consisted of about 1000 words in mercury delay lines and about 4000 words on a magnetic disk. Its execution rate approached 1000 instructions per second. The computer was notable for its logical design, which made programming easy and led to economic use of the limited storage. A multiplier was incorporated, and various single-word and single-bit registers were used to assist in relative addressing, subroutine linking, reentrant programming, and decision making. Input was from paper tape and output to paper tape and a modified teletypewriter.

Published in:

Annals of the History of Computing  (Volume:6 ,  Issue: 2 )