Why we require device drivers ?

Replies

• 

  Aashish Joshi

  I think these two links will explain what you're looking for :
  
  #-Link-Snipped-#
  Device Driver
• 

  silenthorde

  Device drivers can be software or hardware. They are required because:
  
  1. Dissimilar devices may have different operating voltage levels or logic levels. drivers are used to match them.
  
  2. Mostly a hardware will require a small piece of code to be properly detected and function as a slave device under a primary device. This code is also known as driver software.
  
  3. The software establishes a common data transfer standard, data transfer rate( baud rate), handshaking functions and several other functions fro the device to be properly functional.
  
  
  
  Example of hardware drivers...MAX 233 RS232 to TTL line driver
• 

  faizaan

  Thanks friend's
• 

  dipen30

  A driver communicates device through the computer bus to which hardware is connected