Adafruit will not be shipping USPS orders Monday February 18, 2019 for the federal holiday, Presidents Day.
Expedited USPS orders placed after 11am ET Friday February 15 will go out Tuesday February 19.
One of the earliest found examples of the library card catalogue is a small tablet, dating to about 2,000 BCE, that emerged near the Sumerian city of Nippur in West Asia. Divided into two columns, the small artifact, less than three-inches wide, listed the titles of 62 works, including the Epic of Gilgamesh. While the basic format of the card catalogue, simple and straightforward, endured in the centuries following the creation of that dusty record, what varied were the systems established to organize these small but highly informative documents.
The array of systems, from that of the Library of Alexandria to those of monastic libraries to the French Cataloguing Code of 1791 (which used playing cards to record titles) is chronicled in an opening essay of The Card Catalog: Books, Cards, and Literary Treasures, a book that was officially published today by The Library of Congress. Illustrated with hundreds of original cards from its holdings, the book delves primarily into the Library’s establishment and its own role in developing the modern card catalogue system that united libraries across America — and its fall, as accumulations of cards ate up precious real estate and computers shuffled into reading rooms. Some are handwritten in elegant script while others are printed, and many have edits penciled in, sometimes as a correction. While interesting windows into the past, catalogue cards aren’t the most visually compelling documents; so accompanying each of these text-heavy relics is the colorful cover of its associated book.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.