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.
[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).
This computer hardware article is a stub.