## Topic 33 Resources

*Students need to understand:*

Numbers

##### how to convert positive denary whole numbers (0–255) into 8 bit binary numbers and vice versa

Choose from the following to help you learn:

##### Books

**CAMBRIDGE Computer Science: **

Pages 126-131. Sections "Why binary", "Binary data", "Number systems", and Method 1 and Method 2.******ROBSON & HEATHCOTE Computer Science (9-1):**

Page 135. Sections "Dinary to denary conversion" which continues to the bottom of Page 136.**SUSAN ROBSON GCSE Computing(3rd edition):**

Pages 50-51, Section "Numbers". **SUSAN ROBSON GCSE Computing(2012): **

Pages 10-11, Section "Numbers". **AXSIED GCSE Computer Science (3rd edition):**

Page 119. R60 "Binary", Page 121. R61 "Binary to Denary Conversions" and Page 123. R62 "Denary to Binary Conversions" **ROUSE & O'BYRNE GCSE(9-1) Computer Science:**

Page 146. Section "Data representation, conversion and arithmetic" to the top half of Page 147, and Page 148 "Numbers" to the top half of Page 149.

##### Web Sites

Pages 3-7: Binary to Denary conversion**BBC Bitesize:**Sections 31 & 32: Binary and Converting positive denary numbers**Cambridge MOOC:**Binary number, Conversion to and from other number systems**Wikipedia:**(2 articles)Binary Number System**Techopedia:**Sections 1 to 9: Binary Numbers**Teach-ICT:**

##### YouTube

**MrDMcKnight:**Watch all (2:14). Why computers use binary-
**MrDMcKnight:**Watch all (7:46). The binary counting system**MrDMcKnight:**Watch all (10:08. Binary conversions**Computer Science Tutor:**Watch from 0:30 to 3:40. Binary-
**Computer Science Tutor:**Watch from 0:20 to 13:47. Binary to Denary conversions**Cambridge GCSE Computing:**Watch all (2:14) Binary Format, Part A**Cambridge GCSE Computing:**Watch all (2:52) Binary Format, Part B**Cambridge GCSE Computing:**Watch all (2:38) Converting positive denary numbers, Part A**Cambridge GCSE Computing:**Watch all (1:22) Converting positive denary numbers, Part B