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ARITHMETIC CALCULATION IN COMPUTERS

ARITHMETIC OPERATION AND CONVERSION DONE BY COMPUTER
As we have seen in previous post that arithmetic computation is an important thing in calculation, if a person doesn’t know arithmetic computations,he will be doomed to be in trouble during calculations that happensin everyday life.So it is necessary to learn arithmetic computation.So in this post I am going to take one step further.I am going to write about octal and hexadecimal numbers.
Now let us discuss some arithmetic conversion.Let us see what is octal and hexadecimal numbers used by digital computer.
The conversion from and to binary, octal and hexadecimal plays an important part in digital computers.Since 23 = 8 and 24 = 16 each octal digit corresponds to three binary digits and each four binary digit corresponds to one hexadecimal digit.
The conversion of from binary to octal is easily accomplished by partitioning the binary into group of three digit each, starting from binary point and preceding to the left or to the right…

ALL ABOUT LASER PRINTER

ALL ABOUT LASER PRINTER

This printer is also known as page printer because they receive their print job one page at a type.There are two major types of laser printer 1)The first use a laser to scan the image on two a organic photo conductive drum (OPC) 2)The second use an array of led to create the image on the drum.Xerox invented this printer in 1971 but the first laser printer was introduced y hp in 1984.
BASIC COMPONENTS
Tonner cartridge:Tonner is a black carbon substance mixed with polyster resin to make it flow better and iron oxide particles to make it sensitive to electrical charge.Tonner contain a medium called developer which carries the tonner until it is used by the EP(Electro photography) process.
The tonner also contains the opc drum. The drum is coated with a photo sensitive material that hold a static charge unless it is exposed to light.The drum also contains a cleaning blade known as doctor blade. That continuously scraps the unused tonner from the drum.
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