Category: BBST Foundations

TL;DR The usual cause of software bugs is when the program interprets bits pattern in the wrong way. Here are data encodings/decodings basics with examples. The post is aligned with…

TL;DR Every computer is still using ASCII codes. Here is a brief history of ASCII codes. The post is aligned with the Black Box Software Testing Foundations course (BBST) designed…

TL;DR As a software tester, you probably have seen a string of hexadecimal numbers. Let’s see why computers are using hexadecimal numbers. The post is aligned with the Black Box…

TL;DR Computers use words too! We will explain what is a computer word. The post is aligned with the Black Box Software Testing Foundations course (BBST) designed by Rebecca Fiedler,…

TL;DR In the last post, we presented Binary numbers. Let’s explore Binary numbers arithmetic and interesting software testing problems that could arise. The post is aligned with the Black Box…

TL;DR Now that we know the decimal number system, it is time to switch to the binary computer number system. The post is aligned with the Black Box Software Testing…

TL;DR The disadvantage of fix-point decimal number representation is a limited number of significant digits that we can store in memory. That implies that we lose precision. Let’s examine floating-point…

TL;DR In computing, we also need to represent the number fractions. Fixed-point number representation is one way to handle fractions. The post is aligned with the Black Box Software Testing…

TL;DR Back to school! Here we will explain decimal numbers adding algorithm, but tailored for software testers. The post is aligned with the Black Box Software Testing Foundations course (BBST)…

TL;DR In order to become a master of testing data sets, you must be able to explain to any person in the world, how is test data stored and manipulated…