Human machine interfaces vary widely, from control panels for nuclear power plants to the screen and input buttons on a cell phone. Designing such interfaces is a challenge, and requires a great deal of work to make the interface functional, accessible, pleasant to use, and logical.ome engineers specialize in developing human machine interfaces and changing the ways in which people interact with machines and systems. Two components are needed in a human machine interface. The first is an input.
ASSORTED REACTIONS OF BENZENE AND METHYLBENZENE This page gives details of some reactions of benzene and methylbenzene (toluene) not covered elsewhere in this section.It deals with the combustion, hydrogenation and sulphonation of benzene and methylbenzene (toluene), and with the oxidation of side chains attached to benzene rings.Remember that benzene, methylbenzene and similar hydrocarbons based on benzene rings are collectively known as arenes.Combustion.SSORTED REACTIONS OF BENZENE AND METHYLBENZENE This page gives details of some reactions of benzene and methylbenzene (toluene) not covered elsewhere in this section.
Aromatic hydrocarbons, or arenes, are those that have at least one benzene ring in them. A benzene ring is a ring of six carbon atoms with three double bonds. The formula for benzene, the simplest arene and base structure for all others, is C6H6. Any compound with a benzene ring is called an aromatic compound. There are many such compounds, which tend to be carcinogenic.