Vehicle Identification Numbers (VINs) Vehicle Identification Numbers are unique codes given to each on-road vehicle in the United States. From 1981, each new car is given a standardized 17-digit code, which includes a serial number. Older cars may have VINs too, although they will not follow the standardized formula.
The vacuum tube (known as a 'valve' in the UK) is an interesting component that made many important technologies possible and it is still used in many things. There are many kinds of vacuum tubes for different jobs. Most types of vacuum tubes have been replaced by semiconductor devices, however vacuum tubes will occupy an important role in the future in the field of nanotechnology. All 'tubes' basically consist of an anode and cathode in a gas or vacuum environment.
Noun. 1. computer keyboard-a keyboard that is a data input device for computers; arrangement of keys is modelled after the typewriter keyboard. keypad. data input device, input device-a device that can be used to insert data into a computer or other computational device.