Wednesday, 30 July 2014

Electrical Portal-EE2

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Electrical Portal-EE2

ATmega8 Microcontroller

Atmel® microcontrollers deliver a rich blend of highly efficient Integrated designs, proven technology, and groundbreaking innovation that is ideal for today's smart, connected products. In this era of the Internet of Things (IoT), microcontrollers comprise a key technology that fuels machine-to-machine (M2M) communications.

Building on decades of experience and industry leadership, Atmel offers proven architectures that are optimized for low power, high-speed connectivity, optimal data bandwidth and rich interface support. By using our wide variety of configuration options, developers can devise complete system solutions for all kinds of applications.

Atmel microcontrollers can also support seamless integration of capacitive touch technology to implement buttons, sliders and wheels. In addition, Atmel microcontrollers (MCUs) deliver wireless and security support. No matter what your market or device, Atmel offers a compelling solution that is tailored to your needs—today and tomorrow.

Memory: It has 8 Kb of Flash program memory (10,000 Write/Erase cycles durability), 512 Bytes of EEPROM (100,000 Write/Erase Cycles).  1Kbyte Internal SRAM
I/O Ports: 23 I/ line can be obtained from three ports; namely Port B, Port C and Port D.
Interrupts:  Two External Interrupt source, located at port D. 19 different interrupt vectors supporting 19 events generated by internal peripherals.
Timer/Counter: Three Internal Timers are available, two 8 bit, one 16 bit, offering various operating modes and supporting internal or external clocking.
SPI (Serial Peripheral interface): ATmega8 holds three communication devices integrated. One of them is Serial Peripheral Interface. Four pins are assigned to Atmega8 to implement this scheme of communication.
USART: One of the most powerful communication solutions is USART and ATmega8 supports both synchronous and asynchronous data transfer schemes. It has three pins assigned for that. In many projects, this module is extensively used for PC-Micro controller communication.
TWI (Two Wire Interface): Another communication device that is present in ATmega8 is Two Wire Interface. It allows designers to set up a commutation between two devices using just two wires along with a common ground connection, As the TWI output is made by means of open collector outputs, thus external pull up resistors are required to make the circuit.
Analog Comparator: A comparator module is integrated in the IC that provides comparison facility between two voltages connected to the two inputs of the Analog comparator via External pins attached to the micro controller.
Analog to Digital Converter: Inbuilt analog to digital converter can convert an analog input signal into digital data of 10bit resolution. For most of the low end application, this much resolution is enough.

Saturday, 15 February 2014

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Saturday, 27 July 2013

components of computer

A few words about computer components.
Input/Output
Input and output such a important devices in information technology . without both of them we cant do anything. input devices such as keyboard, mouse, etc are used to give instruction to the user . and output devices like , printer, moniter , which shows the processed input provide by user
CPU
Its is also called the brain of the computer without this a computer is nothing but the box of the components. in the cpu the airthmetic and logical unit are there which helps to produced the out put of the airthmetic equations a+b.
PC Components
The Components of PC Are help to operate the system . the pc componensts works to gather even they have different nature some components of pc are as folows
Input devices — keyboard and mouse
Computer — system unit
Output devices — a CRT monitor and a printer
System Unit
The system unit is basically the components of processor which are the main brain of computer computer is noting without this. but the box of components.
Internal Components
The components inside the system (Cabinet) There Can be many components inside the cabinet some are listed below.
1. Motherboared
2. Hard disk
3.RAM (Random access memory)
4. DVD Rom
5. Floppy Disk
Power Supply Unit
A typical system unit contains a single power supply unit that converts commercial power into the various levels required by the different units in the system.
Drives
Every component of cpu need drivers to run that devices and every component have their own drivers for example when we install the operating system basically the latest versions of windows . the windows have preloaded drivers itself no need to install optional drivers .so latest versions of windows provide in built drivers of ithernet, audio, video, graphics and many more.
System Board
System board is the board which we normally called the motherboar. on the motherboard we place our all components of cpu even processor are place on motherborad

Laptops
Now these days laptops plays important role in the field of information technology laptops save our time as well as money . now these days laptops make special space in heart of public . with laptops you can surf internet . make presentations and many more on the go.

About Drives

Drives
Every component of cpu need drivers to run that devices and every component have their own drivers for example when we install the operating system basically the latest versions of windows . the windows have preloaded drivers itself no need to install optional drivers .so latest versions of windows provide in built drivers of ithernet, audio, video, graphics and many more.

Sunday, 21 July 2013

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