Interfacing DAC

by admin - 0

Digital-to-Analog Conversion or simply DAC, is a device that is used to convert a digital (usually binary) code into an analog signal (current, voltage, or electric charge). Digital-to-analog conversion is the primary means by which digital equipment such as computer-based systems are able to translate digital data into real-world signals that are more understandable to or useable by humans, such as music, speech, pictures, video. It also allows digital control of machines, equipment, household appliances. When data is in binary form, the 0's and 1's may be of several forms such as the TTL form where the logic zero may be a value up to 0.8 volts and the 1 may be a voltage from 2 to 5 volts. The

Interfacing LCD

by admin - 0

Introduction LCD is the most common display devices used in different dedicated applications be it the instrumentation, medical equipment, panels, robotics etc. It is quite easy to interface it with the microprocessors or microcontrollers. We can directly interface a LCD with microcontrollers, however, for interfacing with microprocessors, we need a peripheral device such as 8255. Here in this post we discuss the basics of LCD, its commands, interfacing using 8255 PPI an final a program to initialize LCD to display some user data on it. PIN Diagram of LCD Pin number Symbol I/O Description 1 Vss xx GND 2 Vcc xx +5V 3 VEE Xx Power Supply to control contrats (use POT) 4 RS I RS=0 to select command Register, to allow user to send command to LCD RS=1 to select data register, allowing user to send data for display 5 R/W I R/W=0 : to Write R/W=1: to

Analog to Digital Conversion (ADC) interfacing

by admin - 0

ADC ADC is used to convert an analog input voltage to its digital equivalent. ADC chip family is ADC080X from National Semiconductors. Some of the ICs are: ADC-0800, ADC-0804: singly analog input channel and 8-bit out bits ADC-0808 and ADC-0809: These are eight analog input inputs with 3-select lines used to select one of eight channel. It also has 8-bit digital output. ADC-0816 : It is an 16-input channel and gives 8-bit digital output signal.   Why Analog to Digital Signals in the real world are analog: light, sound, temperature, pressure, acceleration or other phenomenon. So, real-world signals must be converted into digital, using a circuit called ADC (Analog-to-Digital Converter), before they can be manipulated by digital equipment. When you scan a picture with a scanner what

Iteration in Python

by admin - 0

Iteration- for and while loop: Iterations are used for repetitive execution of the same block of code over and over. Loop or iteration are popular block of code in all the programming language like basic, PASCAL, C, JAVA, PHP and all others. They can be numeric or collection based. Type of Iteration There are two types of iteration: a) Definite iteration, in which the number of repetitions is specified explicitly in advance. This is implemented using the for loop. b) Indefinite iteration, in which the code block executes until some condition is met. This type of iteration is implemented using the while loop How to check if an object is iterable? we can check whether an object is itrable r not by passing it to the

GGSIPU Mid-Term-1 April 2022 Solution

by admin - 0

Solution MT-1 April 2022 ETEE 310  Microprocessors and Microcontrollers Time 1.5 Hours                                                               MM: 30   Q1. Differentiate between PC and SP       Sl PC SP 1 Program counter (PC) points to the next instruction in memory to be executed Stack Ponter(SP) points to the top of the stack memory from where an item could be accessed 2 It is auto incremented for normal sequential program Incremented for PUSH and for POP operation an item accessed and the SP decremented for stack-up configuration   Q1. (b) Briefly describe different memory technologies used in microprocessor system. A microprocessor system does not contain any memory internally other than the set

Top
error: Content is protected !!