Components of computer

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this ppt is about different devices of
computer

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Components of computer

  1. 1. 1.The Keyboard2.The Mouse3.Joystick4.The Scanner5.Optical character reader (ocr)6.Magnetic ink character reader (micr)7.Light pen8.Bar code reader9.Microphone (mic)10.Digital camera (digicam)
  2. 2. Advantages**reliable way of inputting text and numbers.*available in variety of formats.Disadvantages**not useful for entering some specific type of data (e.g..pictures, diagrams, voice, video etc.*very slow while
  3. 3. Advantages*Ideal for pointing objectoptions on desktop computer*Most familiar and easy to use pointing device.Disadvantages*need a f lat space close to computer.*a mouse can’t easily be used with a laptop or a note book or apalm top computer.
  4. 4. Advantages*Easy to learn and use.*not costly.Disadvantages*movement is offered only in forward, backward left and rightdirections , so diagonal movements create problems at times.
  5. 5. Advantages*It can copy things onto computers then you can alter the thingsyou copied.*they are useful for capturing images and being stored in acomputerDisadvantages*images can take a lot of memory space*scanners are not portable devices
  6. 6. Advantages*It can be stored on a computer so is less likely to be lost.*converted text is editable in word processors.Disadvantages*you need to buy a scanner and OCR software*It is not completely accurate and text would need proof -reading afterwards
  7. 7. Advantages*Documents prepared for MICR are difficult to forge*Documents can still be read after being folded or split etc.Disadvantages*MICR readers and encoders are expensive*The system can only accept a few characters.
  8. 8. Advantages*Easy to use*Can directly draw on screenDisadvantages*Not very accurate while drawing*Tiresome after long usage hours
  9. 9. Advantages*Fast and reliable method of inputting data*can even read from curved or upside down surfacesDisadvantages*Input is limited to a number code

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