# Collin's Lab: Binary & Hex ## Video http://youtu.be/jvx-NrILgpE Decimal isn't the only way to represent a value - get acquainted with Binary & Hexadecimal, two very important numeral systems often found lurking within the depths of technology. - [Next Page](https://learn.adafruit.com/collins-lab-binary-and-hex/transcript.md) ## Featured Products ### Blue 7-segment clock display - 0.56" digit height [Blue 7-segment clock display - 0.56" digit height](https://www.adafruit.com/product/812) Design a clock, timer or counter into your next project using our pretty 4-digit seven-segment display. These bright crisp displays are good for adding numeric output. Besides the four 7-segments, there are decimal points on each digit and an extra wire for colon-dots in the center (good for... In Stock [Buy Now](https://www.adafruit.com/product/812) [Related Guides to the Product](https://learn.adafruit.com/products/812/guides) ### Membrane 3x4 Matrix Keypad + extras [Membrane 3x4 Matrix Keypad + extras](https://www.adafruit.com/product/419) Punch in your secret key into this numeric matrix keypad. This keypad has 12 buttons, arranged in a telephone-line 3x4 grid. It's made of a thin, flexible membrane material with an adhesive backing (just remove the paper) so you can attach it to nearly anything. The keys are connected into... In Stock [Buy Now](https://www.adafruit.com/product/419) [Related Guides to the Product](https://learn.adafruit.com/products/419/guides) ### Adafruit 0.56" 4-Digit 7-Segment Display w/I2C Backpack - Yellow [Adafruit 0.56" 4-Digit 7-Segment Display w/I2C Backpack - Yellow](https://www.adafruit.com/product/879) What's better than a single LED? Lots of LEDs! A fun way to make a small display is to use an [8x8 matrix](https://www.adafruit.com/category/37_88) or a [4-digit 7-segment display](https://www.adafruit.com/category/37_103). Matrices like these are... In Stock [Buy Now](https://www.adafruit.com/product/879) [Related Guides to the Product](https://learn.adafruit.com/products/879/guides) ### TIMESQUARE DIY Watch Kit - Red Display Matrix [TIMESQUARE DIY Watch Kit - Red Display Matrix](https://www.adafruit.com/product/1106) Show up stylish AND on time to any event with this awesome looking DIY watch. We have a few watch kits here at Adafruit but we finally have one that looks good and fits well, even for ladies and kids and others with smaller wrists and hands. Its got an 8x8 bit matrix display and a repurposed... No Longer Stocked [Buy Now](https://www.adafruit.com/product/1106) [Related Guides to the Product](https://learn.adafruit.com/products/1106/guides) ### Medium 16x32 RGB LED matrix panel - 6mm Pitch [Medium 16x32 RGB LED matrix panel - 6mm Pitch](https://www.adafruit.com/product/420) Bring a little bit of Times Square into your home with this 16 x 32 RGB LED matrix panel. These panels are normally used to make video walls, here in New York we see them on the sides of busses and bus stops, to display animations or short video clips. We thought they looked really cool so we... In Stock [Buy Now](https://www.adafruit.com/product/420) [Related Guides to the Product](https://learn.adafruit.com/products/420/guides) ### Miniature Keyboard- Microcontroller-Friendly PS/2 and USB [Miniature Keyboard- Microcontroller-Friendly PS/2 and USB](https://www.adafruit.com/product/857) Add a typing interface to your project with this microcontroller-friendly miniature keyboard. We found the smallest PS/2+USB keyboard available, a mere 8.75" x 4.65" x 0.6" (220mm x 118mm x 16mm)! It's small but usable to make a great accompaniment to either a... Out of Stock [Buy Now](https://www.adafruit.com/product/857) [Related Guides to the Product](https://learn.adafruit.com/products/857/guides) ## Related Guides - [Adafruit LED Backpacks](https://learn.adafruit.com/adafruit-led-backpack.md) - [Raspberry Pi Physical Dashboard](https://learn.adafruit.com/raspberry-pi-physical-dashboard.md) - [Mindfulness Clock OF DOOM](https://learn.adafruit.com/mindfulness-clock-of-doom.md) - [Trinket React Counter](https://learn.adafruit.com/trinket-react-counter.md) - [LED Backpack Displays on Raspberry Pi and BeagleBone Black](https://learn.adafruit.com/led-backpack-displays-on-raspberry-pi-and-beaglebone-black.md) - [DeLorean Time Circuit](https://learn.adafruit.com/delorean-time-circuit.md) - [Fidget Spinner Tachometer](https://learn.adafruit.com/fidget-spinner-tachometer.md) - [CircuitPython Hardware: LED Backpacks & FeatherWings](https://learn.adafruit.com/micropython-hardware-led-backpacks-and-featherwings.md) - [Arduino GPS Clock](https://learn.adafruit.com/arduino-clock.md) - [Personalized NextBus ESP8266 Transit Clock](https://learn.adafruit.com/personalized-esp8266-transit-clock.md) - [Tap Tempo Trinket](https://learn.adafruit.com/tap-tempo-trinket.md) - [Pearl's Gem Weapon – Steven Universe](https://learn.adafruit.com/pearl-s-spear-steven-universe.md) - [Sound Reactive Sunflower Baby Crib Mobile with Bluetooth Control](https://learn.adafruit.com/sound-reactive-sunflower-baby-crib-mobile-with-bluetooth-control.md) - [Adafruit New York and NYC DOE vendor information ](https://learn.adafruit.com/educational-orders-for-educators-based-in-new-york.md) - [Best Beginner Boards for Teachers](https://learn.adafruit.com/best-beginner-boards-for-teachers.md)