Programming for GCSE Topic 9.1: Logic Circuits T eaching L ondon C omputing William Marsh School of Electronic Engineering and Computer Science Queen Mary.
A BRIEF HISTORY OF COMPUTING. 2700 B.C. ABACUS The Sumerians invented an early form of the abacus that they may have used for simple additional and subtraction.
Programming for GCSE Topic 9.1: Logic Circuits
A brief history of computing
