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.
Derivatives of benzene occur sufficiently often as a component of organic molecules that there is a Unicode symbol in the Miscellaneous Technical block with the code U+232C (â¬) to represent it with three double bonds, and U+23E3 (â£) for a delocalized version.he most common reactions of benzene involve substitution of a proton by other groups. Electrophilic aromatic substitution is a general method of derivatizing benzene. Benzene is sufficiently nucleophilic that it undergoes substitution by acylium ions and alkyl carbocations to give substituted derivatives.