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Showing posts with the label INTEGRATED CIRCUITS

SUMMARY OF AN OUTPUT DEVICE KNOWN AS INKJET PRINTER

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INKJET PRINTERS THE MOST POPULAR TYPE OF PRINTER IN TODAYS MARKET IS INKJET PRINTER.  IT USES A RESERVIOR OF INK, A PUMP AND A NOZZLE.  IT WORKS EFFECIENTLY AND T IS THE CHEAPEST PRINTER IN THE MARKET STARTING 1800 BUT THE PRINTER COST IS HIGHCOMPARING TO OTHERS TYPE OF PRINTER. IT SPRAYS THE LIQUID INK ON TO A PAPER ACCORDING TO THE PATTERN OF PRINTED   DOCUMENTS.  IT SUPPORTS VERY HIGH DEFINATION OF THE DOCUMENT TYPES. PARTS OF INKJET PRINTER :- INKJET PRINTER ARE SIMPLE DEVICE.  THEY CONTAINS VERY FEW PARTS.  THEY ARE INEXPENSIVE AND EASILY AVAILABLE IN THE MARKET.THE PARTS CAN BE DIVIDED INTO THE FOLLOWING CATEGORIES  1) PRINT HEAD OF INK CARTRIDGE-->  IT CONTAINS LIQUID INK AND TWO HUNDRED TINY NOZZLES TO SPRAY THE INK IN SMALL DROPLETS. MANY TIMES A PRINTER MAYCONTAIN A RESERVOIR OF INK.  MOST COMMON COLOURS ARE USED INTO SEPARATE CARTIDGE ONE FOR BLACK AND ANOTHER ONE FOR CYAN, MAGENTA AND YELLOW.  THERE ARE TWO METHODS OF SPRAYING THE INK. • THERMAL BUBBLE --> IT IS

TROUBLE SHOOTING FOR NO DISPLAY IN PERSONAL COMPUTER.

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  TROUBLESHOOTING FOR NO DISPLAY FRIENDS TODAY I AM GOING TO TELL YOU ABOUT THE CORRECT STEPS TO BE TAKEN IN ORDER TO REPAIR THE COMPUTER IF THERE IS NO DISPLAY.  MEANS THAT WHEN YOU START THE COMPUTER, THE CPU FAN AND SMPS FAN IS RUNNING ALL LED IS ON BUT THERE IS NO DISPLAY IN THE MONITOR. STEP 1  START THE COMPUTER AFTER 30 SECONDS  PRESS NUMLOCK KEY COUPLE OF TIMES.  IF THE NUMLOCK LED IS GETTING ON AD OFF,  THEN THE PROBLEM IS WITH THE MONITOR.  IF THE NUMLOCK LED IS ON OR STEADY ON OR STEADY OFF THEN THE PROBLEM IS WITH THE CPU. STEP2--> SUPPOSE THE PROBLEM IS WITH THE MONITOR  1) CHECK THE AC WALL OUTLET (PLUG) AND POWER CODE WITH THE LINE TESTER OR MULTIMETER.  NOW CHECK THE POWER BUTTON IS ON AND THE BRIGHNESS EVEL OF THE MONITOR.   2) IF THERE IS NO POWER  IN THE MONITOR  THEN THE POWER PANEL MIGHT BE FAULTY.  REPAIR THE MONITOR IF THE POWER LED IS ON, EJECT THE VGA CABLE  FROM THE CPU AND MESSAGE WILL APPEAR ON THE DISPLAY.     3) IF IT DOES THEN THE VGA CABLE OR

UNDERSTANDING THE COMPUTER REGISTERS.

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 REGISTERS AND ITS USES IN COMPUTER WORLD. “In this life, all we have is memory! ” This exclamatory sentence is used by many film makers in their dialog.  So does it actually mean something to them?  Yes it definitely means everything to them and us.  That’s why they show them in their cinema (movie, film whatever you say).  Memories mean everything that is stored in our brain after we experience it and then use it as a lesson for life  or entertainment purpose. Humans as well as all living beings do that.  But our topic is  “WHAT ARE REGISTERS? WHY DO COMPUTERS NEED THEM?” So here we begin. The discrete elements of information in a digital computer must have a physical existence in some information storage medium.  Furthermore, when discrete elements  of information are represented in binary form, the information storage medium must contain binary storage elements for storing individual bits.   A binary cell is a device that possesses two stable states and is capable of storing one bi

RULES OF LOGIC ---> INTERNET PROTOCOL

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 RULES OF LOGIC---->INTERNET PROTOCOL FRIENDS, TODAY I AM GOING TO DISCUSS SOMETHING ABOUT IP ADDRESSING.  IP IS A LOGICAL ADDRESS FULLFORM INTERNET PROTOCOL.  IT PROVIDES LOGICAL ADDRESS TO NETWORKING DEVICES.   THESE ADDRESSES ARE USED TO DEFINE SOURCE AND DESTINATION OF DATA PACKETS IP HAS TWO VERSIONS 1. IP VERSION 4 2. IP VERSION 6 IP VERSION 4 IT IS 32 BIT ADDRESS WRITTEN IN DECIMAL NUMBER  FORMAT  192.168.1.1 THE NUMBERS IN THE DIGITS LIKE 192.68.1.1 HERE EVERY NUMBER BEFORE THE DOT IS AN OCTET. HERE IT IS SHOWN THAT EACH DIGIT IS PRECEDED BY DOT IS AN NUMBER BELONGING TO AN OCTET LIKE FIRST OCTET, SECOND OCTET , THIRD OCTET AND FOURTH OCTET. EACH OCTET IS AN NUMBER IN BINARY FORM WRITTEN IN 2^8=256 BINARY FORM HERE THE DIGIT SHOWS THAT A VARIABLE IS IN THE BY POWER OF 2, HERE I WANT TO SAY THAT AS COMPUTER UNDERSTANDS BINARY DIGIT IN WHICH THE VARIABLES ARE 0 AND 1.  AS THE COMPUTER UNDERSTANDS BINARY DIGIT SO IT HAS ONLY 2 VALUES. HENCE THE POWER IS WRITTEN IN 2. SO THE

TOPOLOGIES OF COMMUNICATING MACHINES

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TYPES OF NETWORK TOPOLOGY NETWORK TOPOLOGY IS THE SCHEMATIC DESCRIPTION OF NETWORK ARRANGEMENT, CONNECTING VARIOUS NODES (SENDER AND RECEIVER) THROUGH LINES OF CONNECTION.   BUS TOPOLOGY BUS TOPOLOGY IS A NETWORK TYPE IN WHICH EVERY COMPUTER AND NETWORK DEVICE IS CONNECTED TO A SINGLE CABLE.   WHEN IT HAS EXACTLY TWO END POINTS, THEN IT IS CALLED LINEAR BUS TOPOLOGY.   FEATURE OF BUS TOPOLOGY 1.        IT TRANSMITS DATA ONLY IN ONE DIRECTION 2.        EVERY DEVICE IS CONNECTED TO A SINGLE CABLE.   ADVANTAGES OF BUS TOPOLOGY 1.        IT IS COST EFFECTIVE CABLE REQUIRED IS LEAST COMPARED TO OTHER NETWORK TOPOLOGY. 2.        USED IN SMALL NETWORKS 3.        IT IS EASY TO UNDERSTAND 4.        EASY TO EXPAND JOINING TWO CABLES TOGETHER.   DISADVANTAGES OF BUS TOPOLOGY 1.        CABLE FAILS THEN WHOLE NETWORK FAILS. 2.        IF A NETWORK TRAFFIC IS HEAVY OR NODES ARE MORE THE PERFORMANCE OF THE NETWORK DECREASES. 3.        CABLE HAS LIMITED LENGTH

MONITORS: A COMPUTER PART

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Folks today i am going to say something about an output device called monitor.   As maximum people know about monitors so i am going to write few things about monitor much of the information you know but i am going to say some few words hence please be with me. Monitor is a primary output device.   It displays all current process application and data i.e. Running inside a computer system.   A standard monitor uses an analog vga interface, which plugs into a tp15 vga connector to a mother board.   There are two types of monitor technology available to the market. CATHODE RAY TUBE (CRT MONITOR) This monitor is fading in popularity but still in widespread use with older computer systems.   It is analog standard monitor a crt uses a picture tube that was used in older tube based tv sets.   The narrow end of the picture tube contains an electron gun it emits 3 electron beams one each for red, green and blue light.   The front end of the picture tube is coated with phos

SUMMARY OF MEMORY

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RAM PROPERTIES Friends in the last post i tried to explain the different types of ram as well as given the details of its similarities now i am going to show you how the properties of ram can be judged . SO LET US BEGIN. SINGLE SIDED VS DOUBLE SIDED DIMMS or DUAL INLINE MEMORY MODULE whatever you call are often referred to as single chip or double sided to describe whether the chips are located on one or both of the modules printed circuit board . However these terms may cause confusion or distract you from the topic, as the physical layout of the chips does not necessarily relate to how they are logically organized or accessed in whatever terms you are told. ERROR CORECTING CODE MEMORY (ECC MEMORY) An ERROR CORRECTING CODE (or ECC) whatever general public says  could be a   kind of  computer data storage  which will  detect  and proper  the more common  types of  internal data corruption in simple words with firmness and boldness. Most computers or workstati