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selection of proper fuse fuse is a safety device or a wire of metal in a cut-out which may be fused by an excessive current the current drawn by an
electricity hazards in the laboratory youve probably read about or heard of people falling onto high voltage rails or cables and surviving thousands
objectivesafter studying this unit you should be able to1 describe the consequences of passing electric current through human body2 state and
introduction electricity is one of the finest gifts of science to the mankind since just a flick of switch can flood the room with light or put on a
reprographic methodsi thermographyii dyelinejii microficheiv faxin this unit you have learnt thatused formethods of reprography are used for the
facsimile this is often known as fax and it represents the interface between reprographic and computer technology by using fax the contents of a
there are basically two methods of copyingphotocopyingthis is a modified development of photography it is quite expensive and slow and is not often
offset litho duplicatingequipment requiredduplicatorplate-making equipment not always essential eg printing box and processing
stencil duplicatingequipment requiredstencil duplicatorthermal copier optionalelectronic stencil cuttermaterialsstencilcopy paperinkcleaning
method the master from which the copies will be taken is first prepared from a special non-absorbent glazed sheet of paper and special carbon paper
spirit duplicatingequipment requiredspirit duplicator also known as hectographthermal copier optionalmaterialsmastershectographic carboncopy
duplicating processes as we mentioned earlier duplicating is a process whereby a master copy is prepared from which a large number of other copies
use of typewriters for multiple copies offices frequently require copies of various letters and documents the simplest method is to make the copies
typewriters with special attachmentscertain special attachments can be used to the typewriter for typing work of a special nature these arethe
automatic typewriter it is a power-driven machine which automatically types a standard pro forma from a previously punched or stencilled master when
electric typewriter electric typewriters are similar to standard typewriters but with an electronic motor taking the place of human energy it is
standard typewriter you must have seen this manually operated machine standard typewriters of various makes such as remington fact godrej etc are
typewriters typewriter is the most common machine used in almost all offices typewritten letters are attractive in appearance as compared to
reprographyin order to disseminate information widely some method of reprography is invariably used reprography is the science and practice of
information distribution the organization and management of any institution be it an isolated lab or a large site with many labs requires that
objectivesafter studying this unit you should be able to1 list various types of reprographic methods2 describe uses of various kinds of typewriters3
introduction like any other office we need equipment to provide for information distribution in the laboratory office also for information
computers can be used for better and more efficient management and organisation of laboratories a computer like the human brain receives information
printer output consider what is required here do you just require management information on the one hand or camera copy for reprographic purposes
vdu visual display unit outputmake sure that vdus are of an appropriate type they can cause severe eyestrain and tension if you do not checka colourb