Archive for March, 2010

TOBO & DHONDU

Thursday, March 4th, 2010

TOBO : %#*&!@#)($

DHONDU : TOBO bolta hai….ki is site pe jane ka aur ….ha ha ha ha …!!!

***  http://www.coolfunnyjokes.com/Funny-Jokes/Animal-Jokes  ***

Micro Processor/Controller

Thursday, March 4th, 2010

MICROPROCESSOR

1. A microprocessor, sometimes called a logic chip, is a computer processor on a microchip.

The microprocessor contains all, or most of, the central processing unit (CPU) functions and is the “engine” that goes into motion when you turn your computer on. A microprocessor is designed to perform arithmetic and logic operations that make use of small number-holding areas called registers. Typical microprocessor operations include adding, subtracting, comparing two numbers, and fetching numbers from one area to another. These operations are the result of a set of instructions that are part of the microprocessor design.

When your computer is turned on, the microprocessor gets the first instruction from the basic input/output system (BIOS) that comes with the computer as part of its memory. After that, either the BIOS, or the operating system that BIOS loads into computer memory, or an application progam is “driving” the microprocessor, giving it instructions to perform.

 2. For more basics, kindly click the link given below :

http://www.kids-online.net/learn/click/details/micropro.html

 3. Get the List of Intel’s Microprocessors:

http://en.wikipedia.org/wiki/List_of_Intel_microprocessors

 4. Wants to know about followings :

 How PCs Work

How Motherboards Work

How Semiconductors Work

 Click on this :

 http://computer.howstuffworks.com/microprocessor.htm

 

 

MICROCONTROLLER

A microcontroller can be considered a self-contained system with a processor, memory and peripherals and can be used with an embedded system. (Only the software needs be added.) The majority of microcontrollers in use today are embedded in other machinery, such as automobiles, telephones, appliances, and peripherals for computer systems. These are called embedded systems. While some embedded systems are very sophisticated, many have minimal requirements for memory and program length, with no operating system, and low software complexity. Typical input and output devices include switches, relays, solenoids, LEDs, small or custom LCD displays, radio frequency devices, and sensors for data such as temperature, humidity, light level etc. Embedded systems usually have no keyboard, screen, disks, printers, or other recognizable I/O devices of a personal computer, and may lack human interaction devices of any kind

A micro-controller is a single integrated circuit, commonly with the following features:

  • central processing unit – ranging from small and simple 4-bit processors to complex 32- or 64-bit processors
  • discrete input and output bits, allowing control or detection of the logic state of an individual package pin
  • serial input/output such as serial ports (UARTs)
  • other serial communications interfaces like I²C, Serial Peripheral Interface and Controller Area Network for system interconnect
  • peripherals such as timers, event counters, PWM generators, and watchdog
  • volatile memory (RAM) for data storage
  • ROM, EPROM, EEPROM or Flash memory for program and operating parameter storage
  • clock generator – often an oscillator for a quartz timing crystal, resonator or RC circuit
  • many include analog-to-digital converters
  • in-circuit programming and debugging support

Microcontrollers are used in automatically controlled products and devices, such as automobile engine control systems, implantable medical devices, remote controls, office machines, appliances, power tools, and toys. By reducing the size and cost compared to a design that uses a separate microprocessor, memory, and input/output devices, microcontrollers make it economical to digitally control even more devices and processes.