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.
A video card is a discrete dedicated circuit board, silicon chip and necessary cooling that provides 2D, 3D and sometimes even general purpose graphics processing (GPGPU) calculations for a computer. Alternate terms include graphics card, display adapter, video adapter, video board and almost any combination of the words in these terms. Modern cards with integrated calculations for triangle setup, transformation and lighting features for 3D applications are typically called graphics processing units (GPU).