Elliott 503

The Elliott 503 was a transistorized computer introduced by Elliott Brothers in 1963. It was software-compatible with the earlier Elliott 803^[1] but was about 70 times faster and a more powerful machine. About 32 units were sold.^[2] The basic configuration had 8192 words of 39 bits each for main memory,^[3] and operated at a system clock speed of 6.7 megahertz. It weighed more than 4,050 pounds (2.0 short tons; 1.8 t).^[4]

See also

• List of transistorized computers
• Cluff–Foster–Idelson code

References

1. Savard, John J. G. (2018) [2005]. "Computer Arithmetic". quadibloc. The Early Days of Hexadecimal. Archived from the original on 16 July 2018. Retrieved 16 July 2018. (NB. Also has information on the Elliott 503 character set.)
2. Lavington, Simon (2011), Moving Targets: Elliott-Automation and the Dawn of the Computer Age in Britain, 1947–1967, Springer Science & Business Media, p. 288, ISBN 978-1-84882933-6
3. "A SURVEY OF NEW WEST-EUROPEAN DIGITAL COMPUTERS (Part 3 - Conclusion): ELLIOTT 503" (PDF). Computers and Automation. XII (11): 36. November 1963. Retrieved 5 September 2020.
4. Weight of Logic (1000), Main Store (850), Power (1350) Cabinets and Control Console (850):
   • "Elliott 503 FACTS - retroComputingTasmania". www.retrocomputingtasmania.com.
   • "Elliott 503 Documents". www.billp.org. Volume 1 of the Computer Manual, p. 2 (13).