The first commercial spam was sent out on April 12, 1994 by lawyer Laurence Canter, who was trying to drum up business for his Arizona law firm.
J. Presper Eckert, inventor of the ENIAC, the Electronic Numerical Integrator And Computer, otherwise known as the first all-purpose fully electronic computer, dubbed the “Giant Brain” by newspapers at the time of its unveiling. Several of its vacuum tubes failed every day, rendering it inoperable half of the time. Nonetheless, it was in use by the U.S. military for nearly a decade, until its retirement in 1955.
On April 12, 1633, Galileo’ssecond trial for his heliocentric beliefs began. Galileo was found guilt of heresy and spent the remainder of his life under house arrest. It was while under house arrest that he considered some of what is considered his best work, including Two New Sciences, which formed the groundwork for kinematics and strength of materials.
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, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, 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.