Binary is the only ‘language’ computers speak. Therefore, if we want to represent numbers, letters, words, text, and images, we must first convert it into binary (0 and 1).

Read the lecture notes on Text Encoding & Compression.

In previous lessons, we focused heavily on representing numbers in different ways (such as in binary or hexadecimal). How can we go a step further and represent words and sentences in a different and more concise way?

Read the lecture notes on Number Systems & Binary and complete the following questions in your notebooks (to be collected).

1. Positional Numbering & Bases
2. Binary Numbers
3. Binary Arithmetic
4. Fixed-Size Representation
5. Two’s Complement
6. Octal & Hexadecimal