Knowledge in Microprocessors and Microcontrollers
Management in Protected Mode
Segmentation unit : Introduction, support registers, related instructions, segment Memory descriptors, logical to linear address translations, protection by segmentation, privilege-levels, rules of inter-privilege level transfer for data and code segments .
Ananya Nigotia
MICROPROCESSOR AND MICROCONTROLLER Assignment
A microcontroller can be considered a self-contained system with a processor, memory and peripherals and can be used as an embedded system. The majority of microcontrollers in use today are embedded in other machinery, such as automobiles, telephones, appliances, and peripherals for computer systems. A device that uses a microprocessor is normally capable of many functions, such as word processing, calculation, and communication via Internet or telephone. However, for the device to work properly, the microprocessor itself has to communicate with other parts of the device.
Peripheral Interfacing and Programming-I
The 8255A is a general purpose programmable I/O device designed to transfer the data from I/O to interrupt I/O under certain conditions as required. It can be used with almost any microprocessor.
Analog to Digital converters
A common use for an ADC is to convert analog video to a digital format. ... This is why all sound cards that have an analog audio input also require an ADC that converts the incoming audio signal to a digital format. The accuracy of the audio conversion depends on the sampling rate used in the conversion process.
Interfacing of Stepper motor to C8051F340
Step motors are low cost, high reliability, high torque at low speeds and a simple, rugged construction that operates in almost any environment. The main disadvantages in using a stepper motor is the resonance effect often exhibited at low speeds and decreasing torque with increasing speed.
controllers
A controller, in a computing context, is a hardware device or a software program that manages or directs the flow of data between two entities. In computing, controllers may be cards, microchips or separate hardware devices for the control of a peripheral device. In a general sense, a controller can be thought of as something or someone that interfaces between two systems and manages communications between them. Here are a few examples of controllers: A graphics card is an integrated circuit card in a computer or, in some cases, a monitor that provides digital-to-analog conversion, video RAM, and a video controller so that data can be sent to a computer's display.
Subham Bera