A checksum is a count of the number of bits in a transmission unit that is included with the unit so that the receiver can check to see whether the same number of bits arrived. If the counts match, then one can assume that the complete transmission was received.

A reaction between atoms that causes a force such as to create a bond.

A respirator which uses a cartridge containing various chemical substances to purify inhaled air of certain gases and vapours.

Spotty discolouration of the topcoat sometimes caused by environmental conditions (acid rain, tree sap, etc.) It can also be caused by improper activation of body filler which leads to staining in the subsequent layers of topcoat.

A process that uses chemical to bring about a change in something.

Description of an integrated circuit where the circuit is built on a silicon chip.

Small flakes of a finish losing adhesion from the substrate. Usually caused by the impact of stones or hard objects.

A restriction in a carburettor. The term is used to describe either the venturi as in single or twin choke carburettor, or for the cold start device.

The butterfly type valve that restricts the flow of air.

An electronic circuit or unit that switches a supply on and off rapidly.