Nicole-Reine Lepaute predicted Halley's Comet in 1757. Ada Lovelace designed first computer program for Analytical Engine. Grace Hopper created first programming language compiler
First console was Magnavox Odyssey in 1972, created by Ralph H. Baer. Handheld consoles evolved from electro-mechanical games using LED displays. First handheld console was Microvision in 1979 with LCD screen
Jet engines trace back to 150 BC aeolipile using steam power. Archytas reportedly designed first self-propelled flying device. First working pulsejet patented by Russian Karavodin in 1906. Ramjet concept patented by Lorin in 1913 but remained theoretical
Sir John Herschel introduced blueprint process in 1842 for technical drawings. Process produced white lines on blue background using light-sensitive ferric compounds. Blueprints were cost-effective, one-tenth of hand-traced reproductions by 1890s
IBM introduced first hard drive with 50 24-inch platters in 1962. IBM 1311 used 14-inch platters in removable pack, resembling washing machine. Digital's RK05 and RL01 pioneered single 14-inch drives in 10.5-inch rack space
Lena is a standard test image for digital image processing since 1973. Cropped from Playboy magazine's November 1972 centerfold. Model Lena Forsén chose "Lenna" spelling to encourage proper pronunciation