Interfacing with Microprocessors

Interfacing with Microprocessors:

18 Segment Display : The Fig. 15.5 shows the 18 Segment Display. They are used to display numbers and alphabets. Like 7-segment displays, 18 Segment Display are also interfaced through 8279 to the microprocessor. Here, instead …


Analog Interfacing : Analog Interfacing – The primary objective of industrial process control is to control physical parameters such as temperature, pressure, flow rate, level, force, light intensity, and so on. The process control system …


Electromagnetic Relays in Interfacing : To control ON/OFF operation of ac devices we can use electromagnetic relay. This relay has both normally open and closed contacts. When a current is passed through the coil of …


Interfacing Dip Switch : A series of tiny switches built into circuit board and the housing for which has a same shape as chip are known as DIP switches. The Fig. 15.23 shows the Interfacing …


Liquid Crystal Display Types : The Liquid Crystal Display Types are one of the most fascinating material systems in nature, having properties of liquids as well as of a solid crystal. The terms liquid crystal …


Optical Motor Shaft Encoders : The Optical Motor Shaft Encoders are used to get the information about the position, direction of rotation, and speed of rotation of various motor shafts. They provide this information in …


Sensors and Transducers : The definition of Sensors and Transducers are follows, The input quantity for most instrumentation systems is nonelectrical. In order to use electrical methods and techniques for measurement, the nonelectrical quantity is converted into …


Seven Segment Display Interfacing : Seven Segment Display Interfacing are generally used as numerical indicators and consists of a number of LEDs arranged in seven segments as shown in the Fig. 15.1. Any number between 0 …


Solid State Relay Interfacing : To avoid the problems of mechanical relays, Solid State Relay Interfacing are used. In this triac is used as a switching element and isolation is provided by opto isolators or …


Speed Control of DC Motor : The Fig. 15.38 shows the analog approach to control the Speed Control of DC Motor. A tachometer is used to get the information about the Speed Control of DC …


Stepper Motor Interface : A stepper motor is a digital motor. It can be driven by digital signal. Fig. 15.18 shows the typical 2 phase Stepper Motor Interface using 8255. Motor shown in the circuit …


Temperature Control System : Before going to study the temperature control system, let us see the block diagram of microprocessor based process Temperature Control System. It is capable of controlling more than one physical parameter. …


Transistor Buffer Circuit : The Fig. 15.12 shows the Transistor Buffer Circuit. In these Transistor Buffer Circuit, transistor is used as a switch. It can be switch ON or OFF with logic 0 or logic …