The instruments of this type, the deflection of the instrument provides a basis for determining the quantity under measurement. The measured quantity. produces some physical effect with deflects or produces a mechanical displacement of the moving system of the instrument. An opposing effect is built in the instrument which tries to oppose the deflection or
Deflection type instrument (PMMC type instrument) Read More »
A stepper motor control is a specially constructed DC motor. It has 4 windings arranged such that instead of running in the usual continuous fashion the motor rotates in precise steps, from one fixed position to another. The common step sizes range from 0.9 to 30 degrees. The stepping action is achieved by proper combination
Microprocessor Based Stepper Motor Control Read More »
Microcontrollers as the name suggests, are small controllers. They are like single chip computers that often embedded into other systems to function as processing / controlling unit, microcontrollers are single chip microcomputers. A microcontroller has a CPU (a microprocessor) in addition to a fixed amount of RAM, ROM and I/O parts and a timer on
Microcontroller – Introduction, Advantages, Features Read More »
Microprocessor – controlled temperature system is used to Read the temperature in a room Display the temperature at LCD/LED panel Turn-on a fan if the temperature is above the limit. Turn-on a heater if the temperature is below the limit. This system has a temperature sensor as an input device to sense room temperature and
Microprocessor Controlled Temperature System Read More »
Memory Interfacing While executing a program, the microprocessor needs to access memory frequently to read instruction code and data stored in memory; the interfacing circuit enables that access. Memory has some signal requirements to write into and read from its registers. Similary, the microprocessor initiates a set of signals when it wants to read from
Memory Interfacing and I/O Interfacing Read More »
The IOP is similar to a CPU except that it is designed to handle the details of I/O processing, Unlike the DMA controller that must be set up entirely by the CPU, the IOP can fetch and execute its own instructions. IOP instructions are specifically designed to facilitate I/O transfers. In addition, the IOP can
Communication Between 8086 and 8089 Read More »