Binary and Denary — Why computers use binary; Place value — the key idea; Binary → Denary; Denary → Binary; Units of storage; The largest value in n bits
Hexadecimal — What hexadecimal is; Why hex is used; Converting between the bases
Binary Arithmetic and Shifts — What this topic covers; Binary addition; Overflow; Binary shifts
Characters, Images and Sound — The big idea; Characters (text); Images (bitmaps); Sound
Compression — What compression is and why we use it; Lossy compression; Lossless compression; Two lossless techniques you must know; Choosing the right type
Character Encoding — Character Encoding; Why Encoding Is Needed; ASCII (American Standard Code for Information Interchange); Worked Conversions; Unicode; ASCII vs Unicode Comparison
Sound and Image Representation — Sound and Image Representation; Sound Representation; Image Representation; Compression