The Carbohydrate Fermentation test uses Phenol Red Broth to test for the fermentation of different sugars. It is one of the fermentation tests, others include the Methyl Red test and the Voges-Proskauer test.
The main reason why we use hexadecimal numbers is because it is much easier to express binary number representations in hex than it is in any other base number system. Computers do not actually work in hex (donât laugh, beginning students do ask that question). Lets look at an example, using a byte.
In computers, numbers are stored in binary, also called radix-2 or base-2, using arrays of flip-flops. Each digit may take one of two values, either 0 or 1. Long strings of these 1âs and 0âs are cumbersome to use, so we will usually represent binary numbers using hexadecimal, also called radix-16 or base-16.