3. Having a good understanding of how binary works is fundamental to knowing many other aspects of how all digital technology works, including computers, networks, PDAs, cell telephones, TVs, etc. Rationale Objective: to realize the importance of the binary number system and convert numbers between base-ten and base-two number systems.
15. Summary Bits are binary digits. Each bit can hold the value 0 or 1. Bytes are made up of 8 bits each. Binary math works just like decimal math, but each bit can have a value of only 0 or 1. Microchips use transistors to process the information (on and off electrical currents) so the computer understands it.
16. “There are only 10 kinds of people in this world, those who understand binary and those who don’t.”
17. References MathCrazyTutoring. (2007, February 13). Binary code in 60 seconds [Video file]. Retrieved from http://www.youtube.com/watch?v=qdFmSlFojIw Binary primer. (n.d.). Retrieved from http://www.lesley.edu/faculty/wbarowy/c7100H/Binary.html Brian, M. (2000, April 1). How Bits and Bytes Work. Retrieved from http://computer.howstuffworks.com/bytes.htm
Notas do Editor
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2 “Computers process information by the way they use electricity. The number one is represented by the electricity being switched on and zero is represented by the electricity being switched off (A Binary Primer).”
2 Explain the decimal numbers we use today (ones, tens, hundreds, thousands, etc.). Show the relation between place value and powers of 10.
3 5. Expanded form examples: Show the number 2,538. Briefly explain the place value of each digit. Point to different digits in the number 6,947 and ask students to name the value of the digit. Show the way that we carry place value from ones to tens when adding.
3 “Computers process complex information by encoding it in a system of ones and zeros, called binary. The binary number system uses only ones and zeros (Binary Primer).” Explain the base-two place values, or powers of two. “Each cell contains a binary digit (bits).” Show table from library and ask what patterns are noticed (odd numbers, even numbers, twos place, fours place, etc.).
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4 Demonstrate converting 010010 and 0011010from binary to decimal.
3 Demonstrate converting 11 and 28 from decimal to binary.
7 Practice: Introduce Excel sheet. Ask students how to convert 17 and 24. Show sum and explain how base-two systems carry to the next place.
6 Using the binary handout, have students work with a partner for 5 minutes to convert between decimal and binary numbers. Quickly review answers, allowing students time to correct mistakes as needed.
3Binary Multipliers: Review chart and relate to internal and external memory.
5 Windows Calculator: Demonstrate how to use the Windows Calculator to convert numbers between binary and decimal.
1“In conclusion, bits are binary digits. Each bit can hold the value 0 or 1. Bytes are made up of 8 bits each. Binary math works just like decimal math, but each bit can have a value of only 0 or 1. Microchips use transistors to process the information (on and off electrical currents) so the computer understands it.”
