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central processing unitmicroprocessorthe microprocessor is an important component in the cpu it is the unit which processes the instructions
types of printers1 impact printersthe impact printers produce the image through a mechanism of striking on the stationary2 line printerthis type
output devices video display unit vdu or monitorvideo display unit is similar to a television it is used to display the results of processes the
input devices keyboardkeyboard is the device through which the commands instructions required for execution of a program is entered it consists of a
overview of a computer system there are three major elements in every computer solution they are data hardware
another way of classifying a computer system is based upon its size and capabilitiesmicrocomputers microcomputers are systems based on the use of
special-purpose and general-purpose computers in general there are two types of digital computers the first is the special-purpose digital computer
classification of computersdigital analog and hybrid computers are of three basic types ndash digital analog and hybrid current use of the word
the fourth generation 1975 onwards this generation of computers have one or more of the following characteristics semi-conductor memory
the third generation 1966-1975 the introduction of ibm-360 series of computers in 1965 marked the beginning of this generation the transistors were
low hydrogen electrodeslow hydrogen electrodes are so called because their covering is low in hydrogen bearing compounds and only traces of hydrogen
the second generation 1956-1965 this generation of computers were characterized by considerable reduction in physical size
iron powder electrodesiron powder is a widely used covering ingredient it is incorporated in certain coverings to the extent of one half of the total
the first generation 1949-1955 the computers in this generation have the following characteristics physically large in size
rutile electrodethis type has thicker coating than cellulosic coated and the flux is mainly composed of rutile titanium di - oxide and silicates with
cellulosic electrodesin the aws e 6010 and e 6011 series of electrodes the protective covering is composed of cellulose c6h10o5 and silicate binders
historical background the brief history of the growth of computers is given belowabacus it was the first mechanical device developed
electrical de-icing system maintenancetests of the system must be carried out when the servicing schedule required it or when a component has been
functional checks of chemical de-icing systemsonce the correct flow rate of the fluid supply has been established the distribution of the fluid flow
servicing of chemical de-icing systemsit is essential for the correct operation of the ice protection system that servicing is carried out on a
testing after installafter installation of a propeller the engine must be ground run in order to check the propeller for correct function and
types of coated electrodesfollowing are the types of coated electrodesa cellulosic electrodesb rutile electrodesc iron powder electrodesd low
installation of propellerthe method of installation will depend on the type of propeller and all instructions detailed in the appropriate amm should
functions of flux coatingthe coating of the electrode performs very important functions which are essential for obtaining a weld of required quality
development of coated electrodescan welding be done by bare wirewhy do we require coating at allwhat are the different types of coatingwhat are the