Posts Tagged ‘input output devices’
The microcontroller is a special type of microprocessor and incorporates components of the microprocessor in a single chip to build a single chip, which contains the heart of the processor, input / output devices and microcontrollers need to collect input data. The microcontroller can be classified into three types of 8-bit, 16 bit and 32-bit microcontroller.
The 8-bit microcontroller consists of internal buses and ALU. The ALU is an arithmetic logic unit. Performs arithmetic operations such as addition, subtraction and logical operations such as AND, OR gate operations. The microcontroller will typically contain the number of various general purpose input / outputs. Therefore, when the general purpose I / O pins are called to an input state, is used to read the sensors and when configured for output stage. The pins can drive the LED devices. Microcontroller architectures have some models include general purpose processor with the number more RAM, ROM or functions of I / O
Interrupt used in the microcontroller is used to wake the device in a low power consumption and interrupt sources are device dependent.
In general, many microcontrollers programmed only in assembler, but now various programming language level can also be used for programming the microcontroller. Therefore, the microcontroller programs take place in the program memory on the chip and the memory can be read-only memory or Flash ROM. In the microcontroller to convert the high level and assembly language code to machine language, assemblers and compilers used.
1. Microcontroller typically includes a CPU, ROM, RAM, and timers.
2.microcontroller is independently owned and operated.
3.It is designed for a specific task to the control system of some.
4. Usually designed with CMOS.
1.corpuscles recorder cum analyzer, recorder cum ECG display and monitoring of patients.
2. Some communication systems like mobile phones, cable TV, and fax machines.
3. And computer peripherals such as the LAN controller, DRAM controller, a laser printer controller.
4. It is also used in automotive applications such as brake system, and Dynamic Ride Control
5. CRT controller, a spectrum analyzer, frequency analyzer, and so on.
Therefore, the microcontroller contains its own clock, parallel ports, peripheral functions, and above all it contains its own memory. The PIC microcontroller, it contains both the RAM to store only the data and flash memory, where instructions are stored. In addition, it also contains different sets of instructions and functions of serial communication.