Most codons in messenger RNA (from DNA) correspond to the addition of an amino acid to a growing polypeptide chain, which may ultimately become a protein. Stop codons signal the termination of this process by binding release factors, which cause the ribosomal subunits to disassociate, releasing the amino acid chain.
V-chip is a generic term for technology used in television set receivers in Canada, Brazil and the USA, which allows the blocking of programs based on their ratings category. It is intended for use by parents to manage their children's television viewing.
VGA video card outputs. VGA is the long-used video standard which was introduced in 1987. VGA stands for Video Graphics Array. VGA is actually the name of the main chip on the original VGA video card introduced by IBM. Over time, VGA has become a more general term refering to a particular video card standard which includes the VGA output connector.