Computers use binary - the digits 0 and 1 - to store data.A binary digit, or bit, is the smallest unit of data in computing.Represented by a 0 or a 1.Binary numbers are made up of bits, e.g. the binary number 1001.The circuits in a computer's processor are made up of billions of transistors.A transistor is a tiny switch that is activated by the electronic signals itreceives. The digits 1 and 0 used in binary refl ect the on and off states of a transistor. Computer programs are sets of instructions. Each instruction is translated into machine code - simple binary codes that activate the CPU.
