Trademark Electronic Search System Tess
In operation, the anode in such a vacuum tube is given a positive potential with respect to the cathode, while the grid is negatively biased. A large negative bias on the grid prevents any electrons emitted from the cathode from reaching the anode; however, because the grid is largely open space, a less negative bias permits some electrons to pass through it and reach the anode. Small variations in the grid potential can thus control large amounts of anode current. Synth-pop continued into the late 1980s, with a format that moved closer to dance music, including the work of acts such as British duos Pet Shop Boys, Erasure and The Communards, achieving success along much of the 1990s. Common cheap popular sound chips of the firsts home computers of the 1980s include the SID of the Commodore 64 and General Instrument AY series and clones used in ZX Spectrum, Amstrad CPC, MSX compatibles and Atari ST models, among others. It was pioneered by Reed Ghazala in the 1960s and Reed coined th