Memory & StorageKey Facts
Quick Reference - Number Systems
Part of Binary & Hex — GCSE Computer Science
This key facts covers Quick Reference - Number Systems within Binary & Hex for GCSE Computer Science. Revise Binary & Hex in Memory & Storage for GCSE Computer Science with 15 exam-style questions and 22 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 14 of 14 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 14 of 14
Practice
15 questions
Recall
22 flashcards
Quick Reference - Number Systems
Conversion Cheat Sheet:
| Denary | Binary (8-bit) | Hexadecimal |
|---|---|---|
| 0 | 00000000 | 00 |
| 10 | 00001010 | 0A |
| 16 | 00010000 | 10 |
| 31 | 00011111 | 1F |
| 100 | 01100100 | 64 |
| 128 | 10000000 | 80 |
| 200 | 11001000 | C8 |
| 255 | 11111111 | FF |
Common Uses in Computing:
- Binary: All computer storage and processing (machine code, RAM, files)
- Hex: Memory addresses (0x1A2F), colors (#FF5733), MAC addresses, error codes, assembly language
- Denary: User interfaces, calculations we see on screen