← Binary Numbers - Count the Dots Activity
Flashcards
Binary Numbers - Count the Dots Activity
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Binary Numbers - Count the Dots Activity: Flashcard Set
| Front | Back |
|---|---|
| What symbols does binary use? | Only zero (0) and one (1) |
| What is a "bit"? | Short for "binary digit" — a single zero or one |
| What is a "byte"? | A group of eight bits, which can represent numbers from 0 to 255 |
| Binary number system | A way of counting using only two digits (0 and 1), also called base two |
| What does a "0" mean on a binary card? | The card is hidden (face down, no dots showing) |
| What does a "1" mean on a binary card? | The card is showing (face up, dots visible) |
| What pattern do the dot cards follow? | Each card has twice as many dots as the card to its right (1, 2, 4, 8, 16...) |
| What is the next card after 16 in the sequence? | 32 (each new card doubles the previous one) |
| How do you make the number 6 with dot cards? | Using the 4-dot and 2-dot cards |
| How do you make the number 15 with dot cards? | Using the 8-, 4-, 2-, and 1-dot cards |
| What is 01001 in decimal? | 9 |
| What is 17 in binary? | 10001 |
| What is the biggest number you can make with 5 binary cards (1,2,4,8,16)? | 31 |
| What is the smallest number you can make with binary cards? | 0 |
| How do modems send binary data? | Using high-pitched beeps for 1 and low-pitched beeps for 0 |
| How do magnetic disks store bits? | By the direction of a magnetic field (North-South or South-North) |
| How do CDs and DVDs store bits optically? | The surface either reflects light (1) or does not reflect light (0) |
| What happens when you add a 0 to the right of a binary number? | It doubles the number (multiplies by 2), similar to how adding 0 in decimal multiplies by 10 |
| What is ASCII? | American Standard Code for Information Interchange — a system computers use to represent characters using bits |
| Why do computers use bits and bytes? | To store and transmit all numbers, text, and other information |
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