In order to send data to the LCD to be displayed, set RS = ___ and ___ pulse to
ID: 3826714 • Letter: I
Question
In order to send data to the LCD to be displayed, set RS = ___ and ___ pulse to E pin? To read the busy flag of the LCD, what should be the status of RS and RAV bits. A stepper motor translates ___ pulses into ___ ? The stepping action of a stepper motor is controlled by ___ ? If a motor takes 60 steps to make one complete revolution, then what is the step angle? In a 4-sequence stepper motor with 100 steps per revolution, the rotor has ___ teeth? Which of the following is true about the RD and WR pins on the ADC0848? Suppose you want to get converted data out of the ADC0848, what should be the status of CS and RD pins? On the ADC, V_ref is an output voltage? Suppose you are given 8-bit ADC and need to achieve a step size of 5 mV. What should be your V_ref? The pins CH1 ... CH8 in ADC0848 are eight (8) analog input channels. Which of the following statements is true? Which of the following is true about the "INTR" pin in ADC? While CS = 0 and RD = 1, provide the address of the selected channel to the DB0...DB7 pins and apply a low-to-high pulse to the WR pin to latch the address and start conversion. Is this statement true or false?Explanation / Answer
q1. rs=1 and high to low pulse to the E Pin this is to enable internal latch in lcd
q2. RS= 0 R/W = 1 busy flag is given by command code register mode
q3 a stepper motor translate digital pulse into shaft revolutions.
q4 how are stepper motor controlled
A stepper motor performs the conversion of logic pulses by sequencing power to the stepper motor windings; generally, one supplied pulse will yield one rotational step of the motor. This precise control is provided by a stepper driver which controls speed and positioning of the motor. The stepper motor increments a precise amount with each control pulse, converting digital information into exact incremental rotation without the need for feedback devices, such as tachometers or encoders. Since the stepper motor and driver is an open-loop system, the problems of feedback loop phase shift and resultant instability, common with servo motor systems are eliminated.
q5. so step angle = 60°/4 = 15° (step anle)
q7 The ADC0844 and ADC0848 are CMOS 8-bit successive approximation A/D converters with versatile analog input multiplexers. The 4-channel or 8-channel multiplexers can be software configured for single-ended, differential or pseudo-differential modes of operation.