- Missile Command is a 1980 shoot ’em up arcade video game developed and published by Atari, Inc. and later licensed to Sega for Japanese and European releases. It was designed by Dave Theurer, who also designed Atari’s vector graphics game Tempest from the same year. The game was released during the Cold War, and the player uses a trackball to defend six cities from intercontinental ballistic missiles by launching anti-ballistic missiles from three bases.
- Silicon (Wikipedia)
Silicon is a chemical element; it has symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic luster, and is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, lead, and flerovium are below it. It is relatively unreactive. Silicon is a significant element that is essential for several physiological and metabolic processes in plants. Silicon is widely regarded as the predominant semiconductor material due to its versatile applications in various electrical devices such as transistors, solar cells, integrated circuits, and others. These may be due to its significant band gap, expansive optical transmission range, extensive absorption spectrum, surface roughening, and effective anti-reflection coating.